diff --git a/mod/case_adapter.scad b/mod/case_adapter.scad
index a1067e6..2c37a64 100644
--- a/mod/case_adapter.scad
+++ b/mod/case_adapter.scad
@@ -44,13 +44,15 @@ mb_adapters=[
                                                 ["left_front", 6.35, 165.1], ["right_front", 163.83, 165.1]], 
             ["adapter_mini-itx", 170, 170, ["left_rear", 6.35, 33.02], ["right_rear", 163.83, 10.16], 
                                            ["left_front", 6.35, 165.1], ["right_front", 163.83, 165.1]],
+            ["adapter_mini-stx", 140, 147, ["left_rear", 5, 5], ["right_rear", 135, 5],
+                                           ["left_front", 5, 142], ["right_front", 135, 142]],
                                            ];
 
     mb = search([case_design],mb_adapters);
     mba_x = mb_adapters[mb[0]][1];
     mba_y = mb_adapters[mb[0]][2];
     mba_z = floorthick;
-    mba_offset_x = -6.35;
+    mba_offset_x = -8.35;
     mba_offset_y = 0;
     mba_radius = 5;
     mba_standoff = [6.75, floorthick, 4, 7, floorthick, "none", "round", "none", true, false, 0, 0];
@@ -60,8 +62,29 @@ mb_adapters=[
     difference() {
         union() {
             difference() {
-                translate([mba_offset_x,mba_offset_y,0]) slab([mba_x,mba_y,mba_z], mba_radius);
-                translate([mba_offset_x+8,mba_offset_y+8,0]) vent_hex((mba_x-16)/6,(mba_y-16)/10,floorthick+4,10,1.5,"horizontal");
+                union() {
+                    translate([mba_offset_x,mba_offset_y,0]) slab([mba_x,mba_y,mba_z], mba_radius);
+                    // additive accessories
+                    if(accessory_name != "none") {
+                        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                            class = accessory_data[a[0]][i];
+                            type = accessory_data[a[0]][i+1];
+                            loc_x = accessory_data[a[0]][i+2];
+                            loc_y = accessory_data[a[0]][i+3];
+                            loc_z = accessory_data[a[0]][i+4];
+                            face = accessory_data[a[0]][i+5];
+                            rotation = accessory_data[a[0]][i+6];
+                            parametric = accessory_data[a[0]][i+7];
+                            size = accessory_data[a[0]][i+8];
+                            data = accessory_data[a[0]][i+9];
+                            mask = accessory_data[a[0]][i+10];
+
+                            if(class == "add1" && face == "bottom") {
+                                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
                 // adapter standoff holes
                 for (i=[2:len(mb_adapters[mb[0]])-3:len(mb_adapters[mb[0]])-3]) {
                     for (c=[1:1:len(mb_adapters[mb[0]])-3]) {
@@ -103,6 +126,87 @@ mb_adapters=[
                         }
                     }
                 }
+                // bottom cover pattern
+                if(bottom_cover_pattern != "solid") {
+                    if(bottom_cover_pattern == "hex_5mm") {
+                        translate([1,0,-2]) vent_hex(mba_x/3.75,mba_y/6,floorthick+4,5,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "hex_8mm") {
+                        translate([1,2,-2]) vent_hex(mba_x/5.5,mba_y/9.5,floorthick+4,8,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_vertical") {
+                        translate([0,-gap,-2]) vent(wallthick,mba_y-2*wallthick-gap,floorthick+4,1,1,(mba_x-2*wallthick-gap)/4,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_horizontal") {
+                        translate([-gap,-gap,-2]) vent(mba_x-2*wallthick-gap,wallthick,floorthick+4,1,(mba_y-2*wallthick-gap)/3,1,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "astroid") {
+                        for(c=[3:12:mba_y-8]) {
+                            for(r=[4:12:mba_x-8]) {
+                                translate([r,c,-4]) linear_extrude(floorthick+5) import("./dxf/astroid_8mm.dxf");
+                            }
+                        }   
+                    }
+                }
+                // subtractive accessories
+                if(accessory_name != "none") {
+                    for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                        class = accessory_data[a[0]][i];
+                        type = accessory_data[a[0]][i+1];
+                        loc_x = accessory_data[a[0]][i+2];
+                        loc_y = accessory_data[a[0]][i+3];
+                        loc_z = accessory_data[a[0]][i+4];
+                        face = accessory_data[a[0]][i+5];
+                        rotation = accessory_data[a[0]][i+6];
+                        parametric = accessory_data[a[0]][i+7];
+                        size_x = accessory_data[a[0]][i+8][0];
+                        size_y = accessory_data[a[0]][i+8][1];
+                        size_z = accessory_data[a[0]][i+8][2];
+                        data = accessory_data[a[0]][i+9];
+                        mask = accessory_data[a[0]][i+10];
+
+                        if ((class == "sub" && face == "bottom") || class == "suball") {
+                            if(accessory_highlight == false) {
+                                parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric,
+                                    [size_x,size_y,size_z],data, mask);
+                            }
+                            else {
+                                #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                                    [size_x,size_y,size_z],data, mask);
+
+                            }
+                        }
+
+                        // create openings for additive 
+                        if ((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                            if(accessory_highlight == false) {
+                                    parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                            }
+                            else {
+                                    #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
+                // ui access panel
+                if(bottom_access_panel_enable == true) {
+                    if(access_panel_rotation == 0) {
+                        translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 90) {
+                        translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 180) {
+                        translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 270) {
+                        translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                }
             }
             // adapter standoffs
             for (i=[2:len(mb_adapters[mb[0]])-3:len(mb_adapters[mb[0]])-3]) {
@@ -201,32 +305,111 @@ mb_adapters=[
 //    translate([mba_offset_x-10, -10, -1]) cube([10, mba_y+20, floorthick+4]);
 //    translate([mba_x+mba_offset_x, -10, -1]) cube([10, mba_y+20, floorthick+4]);
     }
+    // additive accessories
+    if(accessory_name != "none") {
+        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+            class = accessory_data[a[0]][i];
+            type = accessory_data[a[0]][i+1];
+            loc_x = accessory_data[a[0]][i+2];
+            loc_y = accessory_data[a[0]][i+3];
+            loc_z = accessory_data[a[0]][i+4];
+            face = accessory_data[a[0]][i+5];
+            rotation = accessory_data[a[0]][i+6];
+            parametric = accessory_data[a[0]][i+7];
+            size = accessory_data[a[0]][i+8];
+            data = accessory_data[a[0]][i+9];
+            mask = accessory_data[a[0]][i+10];
+
+            if(class == "add2" && face == "bottom") {
+                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+            }
+        }
+    }
+    // ui access port
+    if(bottom_access_panel_enable == true) {
+        if(access_panel_rotation == 0) {
+            translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 90) {
+            translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 180) {
+            translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 270) {
+            translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+    }
 }
 
 
 /*
-           NAME: io_panel
+           NAME: io_plate
     DESCRIPTION: creates rear io panel for legacy cases
            TODO: none
 
-          USAGE: io_panel()
+          USAGE: io_plate()
 
 */
-module io_panel() {
+module io_plate() {
 
-    io_window_x = 158.75;
+    io_window_x = case_design == "adapter_mini-stx" ? 124.75 : 158.75;
     io_window_y = 4;
-    io_window_z = 44;
-    io_offset = 6.35;
+    io_window_z = case_design == "adapter_mini-stx" ? 40 : 44;
+    io_offset = case_design == "adapter_mini-stx" ? 1.2 : 10.79;
 
     difference() {
         union() {
             translate([-1,io_window_y-1,-1]) cube([io_window_x+2,1,io_window_z+2]);
-            translate([0,0,0]) cube([io_window_x,4,io_window_z]);
+            cube([io_window_x,4,io_window_z]);
         }
         translate([2,-2,2]) cube([io_window_x-4,5,io_window_z-4]);
-        translate([8.79 ,6,bottom_height-pcb_z+pcb_loc_z+2]) 
+        translate([io_offset,6,bottom_height-pcb_z+pcb_loc_z+2]) 
             sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        // subtractive accessories
+        if(accessory_name != "none") {
+            for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                class = accessory_data[a[0]][i];
+                type = accessory_data[a[0]][i+1];
+                loc_x = accessory_data[a[0]][i+2]+io_offset;
+                loc_y = accessory_data[a[0]][i+3]+io_window_y;
+                loc_z = accessory_data[a[0]][i+4]+2;
+                face = accessory_data[a[0]][i+5];
+                rotation = accessory_data[a[0]][i+6];
+                parametric = accessory_data[a[0]][i+7];
+                size_x = accessory_data[a[0]][i+8][0];
+                size_y = accessory_data[a[0]][i+8][1];
+                size_z = accessory_data[a[0]][i+8][2];
+                data = accessory_data[a[0]][i+9];
+                mask = accessory_data[a[0]][i+10];
+
+                if ((class == "sub" && face == "bottom") || class == "suball") {
+                    if(accessory_highlight == false) {
+                        parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric,
+                            [size_x,size_y,size_z],data, mask);
+                    }
+                    else {
+                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                            [size_x,size_y,size_z],data, mask);
+
+                    }
+                }
+
+                // create openings for additive 
+                if ((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                    if(accessory_highlight == false) {
+                            parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                    else {
+                            #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                }
+            }
+        }
     }
 }
 
diff --git a/mod/case_bottom.scad b/mod/case_bottom.scad
index ed6f059..8d63976 100644
--- a/mod/case_bottom.scad
+++ b/mod/case_bottom.scad
@@ -300,6 +300,13 @@ module case_bottom(case_design) {
                             }
                         }
                     }
+                    // rear io plate support for standard form motherboards
+//                    if(rear_io_plate == true) {
+//                        difference() {
+//                            translate([-10.79+pcb_loc_x,-gap-adj,-2+bottom_height-pcb_z+pcb_loc_z-1]) cube([162.75, 13, 46]);
+//                            translate([-10.79+pcb_loc_x-1,-gap-2*adj,-pcb_z+pcb_loc_z+bottom_height]) cube([162.75+2, 15, top_height+1]);
+//                        }
+//                    }
                 }
                 // tray side attachment holes
                 if(case_design == "tray" || case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
@@ -456,6 +463,10 @@ module case_bottom(case_design) {
                         }   
                     }
                 }
+                // rear io plate opening for standard form motherboards
+                if(rear_io_plate == true) {
+                    translate([-8.79+pcb_loc_x,-4.5,-2+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 44]);
+                }
             }
             // pcb standoffs
             if(sbc_bottom_standoffs  == true) {
@@ -544,7 +555,7 @@ module case_bottom(case_design) {
                 // extended right-rear standoff
                 if((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10) && ext_bottom_rear_right_enable == true) {
                     normal_standoff = [ext_bottom_standoff[0],
-                                        bottom_height+pcb_loc_z+ext_bottom_rear_right_adjust,
+                                        bottom_height+ext_bottom_rear_right_adjust,
                                         ext_bottom_standoff[2],
                                         ext_bottom_standoff[3],
                                         ext_bottom_standoff[4],
@@ -564,7 +575,7 @@ module case_bottom(case_design) {
                         (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
                             ext_bottom_front_right_enable == true) {
                     normal_standoff = [ext_bottom_standoff[0],
-                                        bottom_height+pcb_loc_z+ext_bottom_front_right_adjust,
+                                        bottom_height+ext_bottom_front_right_adjust,
                                         ext_bottom_standoff[2],
                                         ext_bottom_standoff[3],
                                         ext_bottom_standoff[4],
@@ -581,7 +592,7 @@ module case_bottom(case_design) {
                 // extended left-rear standoff
                 if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_bottom_rear_left_enable == true) {
                     normal_standoff = [ext_bottom_standoff[0],
-                                        bottom_height+pcb_loc_z+ext_bottom_rear_left_adjust,
+                                        bottom_height+ext_bottom_rear_left_adjust,
                                         ext_bottom_standoff[2],
                                         ext_bottom_standoff[3],
                                         ext_bottom_standoff[4],
@@ -601,7 +612,7 @@ module case_bottom(case_design) {
                             (pcb_loc_x >= 10 && depth-(pcb_loc_y+pcb_depth) <= 10)) && 
                                 ext_bottom_front_left_enable == true) {
                     normal_standoff = [ext_bottom_standoff[0],
-                                        bottom_height+pcb_loc_z+ext_bottom_front_left_adjust,
+                                        bottom_height+ext_bottom_front_left_adjust,
                                         ext_bottom_standoff[2],
                                         ext_bottom_standoff[3],
                                         ext_bottom_standoff[4],
diff --git a/mod/case_top.scad b/mod/case_top.scad
index a41f09f..8bace33 100644
--- a/mod/case_top.scad
+++ b/mod/case_top.scad
@@ -30,6 +30,7 @@ module case_top(case_design) {
     vu_rotation = [15,0,0];
     case_fn = 360;     // circle segments for round cases
     case_ffn = 90;     // circle segments for fillet of round cases
+    adj = .01;
 
     difference() {
         union() {
@@ -293,6 +294,13 @@ module case_top(case_design) {
                             }
                         }
                     }
+                    // rear io plate support for standard form motherboards
+//                    if(rear_io_plate == true) {
+//                        difference() {
+//                            translate([-10.79+pcb_loc_x,-gap-adj,-2+bottom_height-pcb_z+pcb_loc_z-1]) cube([162.75, 13, 46]);
+//                            translate([-10.79+pcb_loc_x-2*adj,-gap-1,pcb_z+pcb_loc_z]) cube([162.75+2, 15, bottom_height+1]);
+//                        }
+//                    }
                 }
                 // pcb standoff holes
                 if(sbc_top_standoffs == true) {
@@ -378,6 +386,10 @@ module case_top(case_design) {
                         }   
                     }
                 }
+                // rear io plate opening for standard form motherboards
+                if(rear_io_plate == true) {
+                    translate([-8.79+pcb_loc_x,-4.5,-2+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 44]);
+                }
             }
             // pcb standoffs
             if(sbc_top_standoffs == true) {
@@ -395,7 +407,7 @@ module case_top(case_design) {
                         if (pcbhole_pos == "left_rear" && top_rear_left_enable == true) {
                             top_support = top_sidewall_support == true ? top_rear_left_support : "none";
                             normal_standoff = [top_standoff[0],
-                                                top_height+pcb_loc_z+top_rear_left_adjust,
+                                                top_height-pcb_loc_z+top_rear_left_adjust,
                                                 top_standoff[2],
                                                 top_standoff[3],
                                                 top_standoff[4],
@@ -411,7 +423,7 @@ module case_top(case_design) {
                         if (pcbhole_pos == "left_front" && top_front_left_enable == true) {
                             top_support = top_sidewall_support == true ? top_front_left_support : "none";
                             normal_standoff = [top_standoff[0],
-                                                top_height+pcb_loc_z+top_front_left_adjust,
+                                                top_height-pcb_loc_z+top_front_left_adjust,
                                                 top_standoff[2],
                                                 top_standoff[3],
                                                 top_standoff[4],
@@ -427,7 +439,7 @@ module case_top(case_design) {
                         if (pcbhole_pos == "right_rear" && top_rear_right_enable == true) {
                             top_support = top_sidewall_support == true ? top_rear_right_support : "none";
                             normal_standoff = [top_standoff[0],
-                                                top_height+pcb_loc_z+top_rear_right_adjust,
+                                                top_height-pcb_loc_z+top_rear_right_adjust,
                                                 top_standoff[2],
                                                 top_standoff[3],
                                                 top_standoff[4],
@@ -443,7 +455,7 @@ module case_top(case_design) {
                         if (pcbhole_pos == "right_front" && top_front_right_enable == true) {
                             top_support = top_sidewall_support == true ? top_front_right_support : "none";
                             normal_standoff = [top_standoff[0],
-                                                top_height+pcb_loc_z+top_front_right_adjust,
+                                                top_height-pcb_loc_z+top_front_right_adjust,
                                                 top_standoff[2],
                                                 top_standoff[3],
                                                 top_standoff[4],
@@ -464,7 +476,7 @@ module case_top(case_design) {
                 // extended right-rear standoff
                 if((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10) && ext_top_rear_right_enable == true) {
                     normal_standoff = [ext_top_standoff[0],
-                                        top_height+pcb_loc_z+ext_top_rear_right_adjust,
+                                        top_height+ext_top_rear_right_adjust,
                                         ext_top_standoff[2],
                                         ext_top_standoff[3],
                                         ext_top_standoff[4],
@@ -484,7 +496,7 @@ module case_top(case_design) {
                         (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
                             ext_top_front_right_enable == true) {
                     normal_standoff = [ext_top_standoff[0],
-                                        top_height+pcb_loc_z+ext_top_front_right_adjust,
+                                        top_height+ext_top_front_right_adjust,
                                         ext_top_standoff[2],
                                         ext_top_standoff[3],
                                         ext_top_standoff[4],
@@ -502,7 +514,7 @@ module case_top(case_design) {
                 // extended left-rear standoff
                 if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_top_rear_left_enable == true) {
                             normal_standoff = [ext_top_standoff[0],
-                                                top_height+pcb_loc_z+ext_top_rear_left_adjust,
+                                                top_height+ext_top_rear_left_adjust,
                                                 ext_top_standoff[2],
                                                 ext_top_standoff[3],
                                                 ext_top_standoff[4],
@@ -522,7 +534,7 @@ module case_top(case_design) {
                             (pcb_loc_x >= 10 && depth-(pcb_loc_y+pcb_depth) <= 10)) &&
                                 ext_top_front_left_enable == true) {
                     normal_standoff = [ext_top_standoff[0],
-                                        top_height+pcb_loc_z+ext_top_front_left_adjust,
+                                        top_height+ext_top_front_left_adjust,
                                         ext_top_standoff[2],
                                         ext_top_standoff[3],
                                         ext_top_standoff[4],
diff --git a/sbc_case_builder.json b/sbc_case_builder.json
index 1c7ce79..c00ef60 100644
--- a/sbc_case_builder.json
+++ b/sbc_case_builder.json
@@ -110,6 +110,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -258,6 +259,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "4",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -406,6 +408,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -554,6 +557,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -702,6 +706,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "4",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -850,6 +855,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -998,6 +1004,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -1146,6 +1153,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -1221,6 +1229,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sata_knockout": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
@@ -1350,6 +1359,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -1498,6 +1508,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -1794,6 +1805,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -1942,6 +1954,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2090,6 +2103,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2238,6 +2252,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2386,6 +2401,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2534,6 +2550,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2682,6 +2699,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2830,6 +2848,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -2978,6 +2997,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3126,6 +3146,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3274,6 +3295,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3422,6 +3444,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "false",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3570,6 +3593,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3718,6 +3742,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -3866,6 +3891,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4014,6 +4040,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4162,6 +4189,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4310,6 +4338,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4458,6 +4487,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4606,6 +4636,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4754,6 +4785,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -4902,6 +4934,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5050,6 +5083,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5198,6 +5232,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5346,6 +5381,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5494,6 +5530,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5642,6 +5679,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5790,6 +5828,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -5938,6 +5977,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6086,6 +6126,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6234,6 +6275,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6382,6 +6424,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6530,6 +6573,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6678,6 +6722,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6826,6 +6871,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -6974,6 +7020,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7122,6 +7169,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7270,6 +7318,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7418,6 +7467,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7566,6 +7616,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7714,6 +7765,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -7862,6 +7914,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -8010,6 +8063,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -8158,6 +8212,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -8306,6 +8361,7 @@
             "pcb_loc_y": "0",
             "pcb_loc_z": "0",
             "raise_top": "0",
+            "rear_io_plate": "false",
             "sbc_bottom_standoffs": "true",
             "sbc_highlight": "false",
             "sbc_information": "false",
@@ -8343,6 +8399,450 @@
             "uart_opening": "default",
             "view": "model",
             "wallthick": "2"
+        },
+        "mini-itx_shell": {
+            "$fn": "90",
+            "access_panel_location": "[10, 15]",
+            "access_panel_orientation": "landscape",
+            "access_panel_rotation": "0",
+            "access_panel_size": "[70, 30]",
+            "accessory_highlight": "false",
+            "accessory_name": "none",
+            "adj": "0.01",
+            "bend_allowance": "1",
+            "bottom_access_panel_enable": "false",
+            "bottom_clearence": "3.5",
+            "bottom_cover_pattern": "hex_8mm",
+            "bottom_front_left_adjust": "0",
+            "bottom_front_left_enable": "true",
+            "bottom_front_left_support": "front",
+            "bottom_front_right_adjust": "0",
+            "bottom_front_right_enable": "true",
+            "bottom_front_right_support": "front",
+            "bottom_rear_left_adjust": "0",
+            "bottom_rear_left_enable": "true",
+            "bottom_rear_left_support": "rear",
+            "bottom_rear_right_adjust": "0",
+            "bottom_rear_right_enable": "true",
+            "bottom_rear_right_support": "rear",
+            "bottom_sidewall_support": "false",
+            "bottom_standoff_diameter": "5.75",
+            "bottom_standoff_hole_size": "3.4",
+            "bottom_standoff_insert": "false",
+            "bottom_standoff_insert_dia": "4.2",
+            "bottom_standoff_insert_height": "5.1",
+            "bottom_standoff_pillar": "hex",
+            "bottom_standoff_reverse": "false",
+            "bottom_standoff_support_height": "4",
+            "bottom_standoff_support_size": "10",
+            "bottom_standoff_type": "countersunk",
+            "case_design": "shell",
+            "case_offset_bz": "0",
+            "case_offset_tz": "0",
+            "case_offset_x": "15",
+            "case_offset_y": "13",
+            "cooling": "default",
+            "corner_fillet": "3",
+            "edge_fillet": "0",
+            "ext_bottom_front_left_adjust": "0",
+            "ext_bottom_front_left_enable": "true",
+            "ext_bottom_front_left_support": "front",
+            "ext_bottom_front_right_adjust": "0",
+            "ext_bottom_front_right_enable": "true",
+            "ext_bottom_front_right_support": "front",
+            "ext_bottom_rear_left_adjust": "0",
+            "ext_bottom_rear_left_enable": "true",
+            "ext_bottom_rear_left_support": "rear",
+            "ext_bottom_rear_right_adjust": "0",
+            "ext_bottom_rear_right_enable": "true",
+            "ext_bottom_rear_right_support": "rear",
+            "ext_bottom_sidewall_support": "true",
+            "ext_bottom_standoff_diameter": "5.75",
+            "ext_bottom_standoff_hole_size": "3.4",
+            "ext_bottom_standoff_insert": "false",
+            "ext_bottom_standoff_insert_dia": "4.2",
+            "ext_bottom_standoff_insert_height": "5.1",
+            "ext_bottom_standoff_pillar": "hex",
+            "ext_bottom_standoff_reverse": "false",
+            "ext_bottom_standoff_support_height": "4",
+            "ext_bottom_standoff_support_size": "10",
+            "ext_bottom_standoff_type": "countersunk",
+            "ext_bottom_standoffs": "true",
+            "ext_top_front_left_adjust": "0",
+            "ext_top_front_left_enable": "true",
+            "ext_top_front_left_support": "front",
+            "ext_top_front_right_adjust": "0",
+            "ext_top_front_right_enable": "true",
+            "ext_top_front_right_support": "front",
+            "ext_top_rear_left_adjust": "0",
+            "ext_top_rear_left_enable": "true",
+            "ext_top_rear_left_support": "rear",
+            "ext_top_rear_right_adjust": "0",
+            "ext_top_rear_right_enable": "true",
+            "ext_top_rear_right_support": "rear",
+            "ext_top_sidewall_support": "true",
+            "ext_top_standoff_diameter": "6.75",
+            "ext_top_standoff_hole_size": "3.4",
+            "ext_top_standoff_insert": "true",
+            "ext_top_standoff_insert_dia": "4.2",
+            "ext_top_standoff_insert_height": "5.1",
+            "ext_top_standoff_pillar": "hex",
+            "ext_top_standoff_reverse": "true",
+            "ext_top_standoff_support_height": "4",
+            "ext_top_standoff_support_size": "10",
+            "ext_top_standoff_type": "blind",
+            "ext_top_standoffs": "true",
+            "fan_size": "0",
+            "flat_blank_section": "false",
+            "floorthick": "2",
+            "gap": "2",
+            "gpio_opening": "default",
+            "indents": "true",
+            "individual_part": "top",
+            "lower_bottom": "0",
+            "material_thickness": "0.5",
+            "move_front": "0",
+            "move_leftside": "0",
+            "move_rear": "0",
+            "move_rightside": "0",
+            "pcb_loc_x": "15",
+            "pcb_loc_y": "0",
+            "pcb_loc_z": "0",
+            "raise_top": "0",
+            "rear_io_plate": "true",
+            "sbc_bottom_standoffs": "true",
+            "sbc_highlight": "false",
+            "sbc_information": "false",
+            "sbc_model": "mini-itx",
+            "sbc_off": "false",
+            "sbc_top_standoffs": "true",
+            "sidethick": "1.5",
+            "text_color": "Green",
+            "text_font": "Nimbus Mono PS",
+            "tol": "0.25",
+            "top_cover_pattern": "hex_8mm",
+            "top_front_left_adjust": "0",
+            "top_front_left_enable": "false",
+            "top_front_left_support": "front",
+            "top_front_right_adjust": "0",
+            "top_front_right_enable": "false",
+            "top_front_right_support": "front",
+            "top_rear_left_adjust": "0",
+            "top_rear_left_enable": "false",
+            "top_rear_left_support": "rear",
+            "top_rear_right_adjust": "0",
+            "top_rear_right_enable": "true",
+            "top_rear_right_support": "right",
+            "top_sidewall_support": "true",
+            "top_standoff_diameter": "6.75",
+            "top_standoff_hole_size": "3.4",
+            "top_standoff_insert": "true",
+            "top_standoff_insert_dia": "4.2",
+            "top_standoff_insert_height": "5.1",
+            "top_standoff_pillar": "hex",
+            "top_standoff_reverse": "true",
+            "top_standoff_support_height": "4",
+            "top_standoff_support_size": "10",
+            "top_standoff_type": "blind",
+            "uart_opening": "default",
+            "view": "model",
+            "wallthick": "2"
+        },
+        "mini-stx_shell": {
+            "$fn": "90",
+            "access_panel_location": "[10, 15]",
+            "access_panel_orientation": "landscape",
+            "access_panel_rotation": "0",
+            "access_panel_size": "[70, 30]",
+            "accessory_highlight": "false",
+            "accessory_name": "none",
+            "adj": "0.01",
+            "bend_allowance": "1",
+            "bottom_access_panel_enable": "false",
+            "bottom_clearence": "3.5",
+            "bottom_cover_pattern": "hex_8mm",
+            "bottom_front_left_adjust": "0",
+            "bottom_front_left_enable": "true",
+            "bottom_front_left_support": "front",
+            "bottom_front_right_adjust": "0",
+            "bottom_front_right_enable": "true",
+            "bottom_front_right_support": "front",
+            "bottom_rear_left_adjust": "0",
+            "bottom_rear_left_enable": "true",
+            "bottom_rear_left_support": "rear",
+            "bottom_rear_right_adjust": "0",
+            "bottom_rear_right_enable": "true",
+            "bottom_rear_right_support": "rear",
+            "bottom_sidewall_support": "false",
+            "bottom_standoff_diameter": "5.75",
+            "bottom_standoff_hole_size": "3.4",
+            "bottom_standoff_insert": "false",
+            "bottom_standoff_insert_dia": "4.2",
+            "bottom_standoff_insert_height": "5.1",
+            "bottom_standoff_pillar": "hex",
+            "bottom_standoff_reverse": "false",
+            "bottom_standoff_support_height": "4",
+            "bottom_standoff_support_size": "10",
+            "bottom_standoff_type": "countersunk",
+            "case_design": "shell",
+            "case_offset_bz": "0",
+            "case_offset_tz": "0",
+            "case_offset_x": "0",
+            "case_offset_y": "0",
+            "cooling": "default",
+            "corner_fillet": "3",
+            "edge_fillet": "0",
+            "ext_bottom_front_left_adjust": "0",
+            "ext_bottom_front_left_enable": "true",
+            "ext_bottom_front_left_support": "front",
+            "ext_bottom_front_right_adjust": "0",
+            "ext_bottom_front_right_enable": "true",
+            "ext_bottom_front_right_support": "front",
+            "ext_bottom_rear_left_adjust": "0",
+            "ext_bottom_rear_left_enable": "true",
+            "ext_bottom_rear_left_support": "rear",
+            "ext_bottom_rear_right_adjust": "0",
+            "ext_bottom_rear_right_enable": "true",
+            "ext_bottom_rear_right_support": "rear",
+            "ext_bottom_sidewall_support": "true",
+            "ext_bottom_standoff_diameter": "5.75",
+            "ext_bottom_standoff_hole_size": "3.4",
+            "ext_bottom_standoff_insert": "false",
+            "ext_bottom_standoff_insert_dia": "4.2",
+            "ext_bottom_standoff_insert_height": "5.1",
+            "ext_bottom_standoff_pillar": "hex",
+            "ext_bottom_standoff_reverse": "false",
+            "ext_bottom_standoff_support_height": "4",
+            "ext_bottom_standoff_support_size": "10",
+            "ext_bottom_standoff_type": "countersunk",
+            "ext_bottom_standoffs": "true",
+            "ext_top_front_left_adjust": "0",
+            "ext_top_front_left_enable": "true",
+            "ext_top_front_left_support": "front",
+            "ext_top_front_right_adjust": "0",
+            "ext_top_front_right_enable": "true",
+            "ext_top_front_right_support": "front",
+            "ext_top_rear_left_adjust": "0",
+            "ext_top_rear_left_enable": "true",
+            "ext_top_rear_left_support": "rear",
+            "ext_top_rear_right_adjust": "0",
+            "ext_top_rear_right_enable": "true",
+            "ext_top_rear_right_support": "rear",
+            "ext_top_sidewall_support": "true",
+            "ext_top_standoff_diameter": "6.75",
+            "ext_top_standoff_hole_size": "3.4",
+            "ext_top_standoff_insert": "true",
+            "ext_top_standoff_insert_dia": "4.2",
+            "ext_top_standoff_insert_height": "5.1",
+            "ext_top_standoff_pillar": "hex",
+            "ext_top_standoff_reverse": "true",
+            "ext_top_standoff_support_height": "4",
+            "ext_top_standoff_support_size": "10",
+            "ext_top_standoff_type": "blind",
+            "ext_top_standoffs": "true",
+            "fan_size": "0",
+            "flat_blank_section": "false",
+            "floorthick": "2",
+            "gap": "2",
+            "gpio_opening": "default",
+            "indents": "true",
+            "individual_part": "top",
+            "lower_bottom": "0",
+            "material_thickness": "0.5",
+            "move_front": "0",
+            "move_leftside": "0",
+            "move_rear": "0",
+            "move_rightside": "0",
+            "pcb_loc_x": "0",
+            "pcb_loc_y": "0",
+            "pcb_loc_z": "0",
+            "raise_top": "0",
+            "rear_io_plate": "true",
+            "sbc_bottom_standoffs": "true",
+            "sbc_highlight": "false",
+            "sbc_information": "false",
+            "sbc_model": "mini-stx",
+            "sbc_off": "false",
+            "sbc_top_standoffs": "true",
+            "sidethick": "1.5",
+            "text_color": "Green",
+            "text_font": "Nimbus Mono PS",
+            "tol": "0.25",
+            "top_cover_pattern": "hex_8mm",
+            "top_front_left_adjust": "0",
+            "top_front_left_enable": "false",
+            "top_front_left_support": "front",
+            "top_front_right_adjust": "0",
+            "top_front_right_enable": "false",
+            "top_front_right_support": "front",
+            "top_rear_left_adjust": "0",
+            "top_rear_left_enable": "false",
+            "top_rear_left_support": "rear",
+            "top_rear_right_adjust": "0",
+            "top_rear_right_enable": "true",
+            "top_rear_right_support": "right",
+            "top_sidewall_support": "true",
+            "top_standoff_diameter": "6.75",
+            "top_standoff_hole_size": "3.4",
+            "top_standoff_insert": "true",
+            "top_standoff_insert_dia": "4.2",
+            "top_standoff_insert_height": "5.1",
+            "top_standoff_pillar": "hex",
+            "top_standoff_reverse": "true",
+            "top_standoff_support_height": "4",
+            "top_standoff_support_size": "10",
+            "top_standoff_type": "blind",
+            "uart_opening": "default",
+            "view": "model",
+            "wallthick": "2"
+        },
+        "adapter_mini-stx_m1s": {
+            "$fn": "90",
+            "access_panel_location": "[-5, 27]",
+            "access_panel_orientation": "landscape",
+            "access_panel_rotation": "0",
+            "access_panel_size": "[90, 30]",
+            "accessory_highlight": "false",
+            "accessory_name": "adapter_mini-stx_m1s",
+            "adj": "0.01",
+            "bend_allowance": "1",
+            "bottom_access_panel_enable": "true",
+            "bottom_clearence": "3.5",
+            "bottom_cover_pattern": "hex_8mm",
+            "bottom_front_left_adjust": "0",
+            "bottom_front_left_enable": "true",
+            "bottom_front_left_support": "front",
+            "bottom_front_right_adjust": "0",
+            "bottom_front_right_enable": "true",
+            "bottom_front_right_support": "front",
+            "bottom_rear_left_adjust": "0",
+            "bottom_rear_left_enable": "true",
+            "bottom_rear_left_support": "rear",
+            "bottom_rear_right_adjust": "0",
+            "bottom_rear_right_enable": "true",
+            "bottom_rear_right_support": "rear",
+            "bottom_sidewall_support": "false",
+            "bottom_standoff_diameter": "5.75",
+            "bottom_standoff_hole_size": "3.4",
+            "bottom_standoff_insert": "false",
+            "bottom_standoff_insert_dia": "4.2",
+            "bottom_standoff_insert_height": "5.1",
+            "bottom_standoff_pillar": "hex",
+            "bottom_standoff_reverse": "false",
+            "bottom_standoff_support_height": "4",
+            "bottom_standoff_support_size": "10",
+            "bottom_standoff_type": "countersunk",
+            "case_design": "adapter_mini-stx",
+            "case_offset_bz": "0",
+            "case_offset_tz": "0",
+            "case_offset_x": "0",
+            "case_offset_y": "0",
+            "cooling": "default",
+            "corner_fillet": "3",
+            "edge_fillet": "0",
+            "ext_bottom_front_left_adjust": "0",
+            "ext_bottom_front_left_enable": "true",
+            "ext_bottom_front_left_support": "front",
+            "ext_bottom_front_right_adjust": "0",
+            "ext_bottom_front_right_enable": "true",
+            "ext_bottom_front_right_support": "front",
+            "ext_bottom_rear_left_adjust": "0",
+            "ext_bottom_rear_left_enable": "true",
+            "ext_bottom_rear_left_support": "rear",
+            "ext_bottom_rear_right_adjust": "0",
+            "ext_bottom_rear_right_enable": "true",
+            "ext_bottom_rear_right_support": "rear",
+            "ext_bottom_sidewall_support": "true",
+            "ext_bottom_standoff_diameter": "5.75",
+            "ext_bottom_standoff_hole_size": "3.4",
+            "ext_bottom_standoff_insert": "false",
+            "ext_bottom_standoff_insert_dia": "4.2",
+            "ext_bottom_standoff_insert_height": "5.1",
+            "ext_bottom_standoff_pillar": "hex",
+            "ext_bottom_standoff_reverse": "false",
+            "ext_bottom_standoff_support_height": "4",
+            "ext_bottom_standoff_support_size": "10",
+            "ext_bottom_standoff_type": "countersunk",
+            "ext_bottom_standoffs": "true",
+            "ext_top_front_left_adjust": "0",
+            "ext_top_front_left_enable": "true",
+            "ext_top_front_left_support": "front",
+            "ext_top_front_right_adjust": "0",
+            "ext_top_front_right_enable": "true",
+            "ext_top_front_right_support": "front",
+            "ext_top_rear_left_adjust": "0",
+            "ext_top_rear_left_enable": "true",
+            "ext_top_rear_left_support": "rear",
+            "ext_top_rear_right_adjust": "0",
+            "ext_top_rear_right_enable": "true",
+            "ext_top_rear_right_support": "rear",
+            "ext_top_sidewall_support": "true",
+            "ext_top_standoff_diameter": "6.75",
+            "ext_top_standoff_hole_size": "3.4",
+            "ext_top_standoff_insert": "true",
+            "ext_top_standoff_insert_dia": "4.2",
+            "ext_top_standoff_insert_height": "5.1",
+            "ext_top_standoff_pillar": "hex",
+            "ext_top_standoff_reverse": "true",
+            "ext_top_standoff_support_height": "4",
+            "ext_top_standoff_support_size": "10",
+            "ext_top_standoff_type": "blind",
+            "ext_top_standoffs": "true",
+            "fan_size": "0",
+            "flat_blank_section": "false",
+            "floorthick": "2",
+            "gap": "2",
+            "gpio_opening": "default",
+            "indents": "true",
+            "individual_part": "bottom",
+            "lower_bottom": "0",
+            "material_thickness": "0.5",
+            "move_front": "0",
+            "move_leftside": "0",
+            "move_rear": "0",
+            "move_rightside": "0",
+            "pcb_loc_x": "0",
+            "pcb_loc_y": "0",
+            "pcb_loc_z": "0",
+            "raise_top": "0",
+            "rear_io_plate": "true",
+            "sbc_bottom_standoffs": "true",
+            "sbc_highlight": "false",
+            "sbc_information": "false",
+            "sbc_model": "m1s",
+            "sbc_off": "false",
+            "sbc_top_standoffs": "true",
+            "sidethick": "1.5",
+            "text_color": "Green",
+            "text_font": "Nimbus Mono PS",
+            "tol": "0.25",
+            "top_cover_pattern": "solid",
+            "top_front_left_adjust": "0",
+            "top_front_left_enable": "false",
+            "top_front_left_support": "front",
+            "top_front_right_adjust": "0",
+            "top_front_right_enable": "false",
+            "top_front_right_support": "front",
+            "top_rear_left_adjust": "0",
+            "top_rear_left_enable": "false",
+            "top_rear_left_support": "rear",
+            "top_rear_right_adjust": "0",
+            "top_rear_right_enable": "true",
+            "top_rear_right_support": "right",
+            "top_sidewall_support": "true",
+            "top_standoff_diameter": "6.75",
+            "top_standoff_hole_size": "3.4",
+            "top_standoff_insert": "true",
+            "top_standoff_insert_dia": "4.2",
+            "top_standoff_insert_height": "5.1",
+            "top_standoff_pillar": "hex",
+            "top_standoff_reverse": "true",
+            "top_standoff_support_height": "4",
+            "top_standoff_support_size": "10",
+            "top_standoff_type": "blind",
+            "uart_opening": "default",
+            "view": "model",
+            "wallthick": "2"
         }
     },
     "fileFormatVersion": "1"
diff --git a/sbc_case_builder.scad b/sbc_case_builder.scad
index 7a56a6a..94526ce 100644
--- a/sbc_case_builder.scad
+++ b/sbc_case_builder.scad
@@ -27,7 +27,7 @@ include <./sbc_case_builder_accessories.cfg>;
 /* [View] */
 // viewing mode "model", "platter", "part"
 view = "model"; // [model, platter, part]
-individual_part = "bottom"; // [top, bottom, right, left, front, rear, io_panel, accessories]
+individual_part = "bottom"; // [top, bottom, right, left, front, rear, io_plate, accessories]
 // single board computer model
 sbc_model = "c1+"; //  ["c1+", "c2", "c4", "hc4", "xu4", "xu4q", "mc1", "hc1", "n1", "n2", "n2+", "n2l", "n2lq", "m1", "m1s", "h2", "h2+", "h3", "h3+", "show2", "rpipico", "rpipicow", "rpicm4+ioboard", "rpicm1", "rpicm3", "rpicm3l", "rpicm3+", "rpicm4s", "rpicm4", "rpicm4l", "rpizero", "rpizerow", "rpizero2w", "rpi1a+", "rpi1b+", "rpi2b", "rpi3a+", "rpi3b", "rpi3b+", "rpi4b", "rpi5", "rock64", "rockpro64", "quartz64a", "quartz64b", "h64b", "star64", "rock4a", "rock4b", "rock4a+", "rock4b+", "rock4c", "rock4c+", "rock5b-v1.3", "rock5b", "rock5bq", "vim1", "vim2", "vim3", "vim3l", "vim4", "tinkerboard", "tinkerboard-s", "tinkerboard-2", "tinkerboard-2s", "tinkerboard-r2", "tinkerboard-r2s", "opizero", "opizero2", "opir1plus_lts", "opir1", "opi5", "jetsonnano", "lepotato", "sweetpotato", "tritium-h2+", "tritium-h3", "tritium-h5", "solitude", "alta", "atomicpi", "visionfive2", "visionfive2q", "licheerv+dock", "rak19007", "atx", "micro-atx", "dtx", "flex-atx", "mini-dtx", "mini-itx", "mini-stx", "nano-itx", "nuc", "pico-itx"]
 
@@ -40,7 +40,7 @@ sbc_highlight = false;
 // enable highlight for accessory subtractive geometry
 accessory_highlight = false;
 // base case design
-case_design = "shell"; // [shell,panel,stacked,tray,tray_sides,tray_vu5,tray_vu7,round,hex,snap,fitted,paper_split-top,paper_full-top,adapter_atx,adapter_micro-atx,adapter_dtx,adapter_flex-atx,adapter_mini-dtx,adapter_mini-itx]
+case_design = "shell"; // [shell,panel,stacked,tray,tray_sides,tray_vu5,tray_vu7,round,hex,snap,fitted,paper_split-top,paper_full-top,adapter_atx,adapter_micro-atx,adapter_dtx,adapter_flex-atx,adapter_mini-dtx,adapter_mini-itx,adapter_mini-stx]
 
 // raises top mm in model view or < 0 = off
 raise_top = 0; // [-1:100]
@@ -254,8 +254,10 @@ ext_bottom_front_right_support = "front"; //[none,left,rear,front,right]
 
 /* [Accessories and Options] */
 
+// rear io plate opening for standard form motherboards
+rear_io_plate = false;
 // case accessory group to load
-accessory_name = "none"; // ["none", "hk_uart", "sensors", "c4_shell_boombox", "c4_desktop_lcd3.5", "c4_deskboom_lcd3.5", "c4_panel_boombox", "c4_panel_lcd3.5", "c4_tray_boombox", "c4_round", "c4_hex", "xu4_keyhole", "hc4_tray_drivebox2.5", "hc4_shell_drivebox2.5", "hc4_shell_drivebox2.5v", "hc4_shell_drivebox3.5", "m1s_shell_nvme", "m1s_shell_ups", "m1s_tray_nvme", "m1_tray_ssd", "m1_fitted_drivebox2.5", "m1_fitted_drivebox3.5", "m1_fitted_pizzabox", "m1_fitted_drivebox3.5v", "h3_shell", "h3_tallboy-ssd", "h3_shell_router", "h3_shell_router-ssd", "h3_lowboy", "h3_lowboy_router", "h3_tray_router", "h3_router_station", "h3_ultimate", "h3_ultimate2", "h3_shell_drivebox2.5v", "show2_shell", "jetsonnano_shell", "jetsonnano_panel", "jetsonnano_stacked", "jetsonnano_tray", "jetsonnano_tray_sides", "rock5b", "visonfive2_shell", "visonfive2_stacked", "visonfive2_tray"]
+accessory_name = "none"; // ["none", "hk_uart", "sensors", "c4_shell_boombox", "c4_desktop_lcd3.5", "c4_deskboom_lcd3.5", "c4_panel_boombox", "c4_panel_lcd3.5", "c4_tray_boombox", "c4_round", "c4_hex", "xu4_keyhole", "hc4_tray_drivebox2.5", "hc4_shell_drivebox2.5", "hc4_shell_drivebox2.5v", "hc4_shell_drivebox3.5", "m1s_shell_nvme", "m1s_shell_ups", "m1s_tray_nvme", "m1_tray_ssd", "m1_fitted_drivebox2.5", "m1_fitted_drivebox3.5", "m1_fitted_pizzabox", "m1_fitted_drivebox3.5v", "h3_shell", "h3_tallboy-ssd", "h3_shell_router", "h3_shell_router-ssd", "h3_lowboy", "h3_lowboy_router", "h3_tray_router", "h3_router_station", "h3_ultimate", "h3_ultimate2", "h3_shell_drivebox2.5v", "show2_shell", "jetsonnano_shell", "jetsonnano_panel", "jetsonnano_stacked", "jetsonnano_tray", "jetsonnano_tray_sides", "rock5b", "visionfive2_shell", "visionfive2_stacked", "visionfive2_tray",adapter_mini-stx_m1s]
 
 text_color = "Green"; // [Green, Black, Dimgrey, White, Yellow, Orange, Red, DarkbBlue]
 text_font = "Nimbus Mono PS"; // [Nimbus Mono PS, Liberation Mono, Noto Sans Mono]
@@ -381,6 +383,10 @@ if (view == "platter") {
         case_bottom(case_design);
         translate([0,(2*depth)+20,case_z+floorthick]) rotate([180,0,0]) case_top(case_design);
     }
+    if(case_design == "adapter_mini-stx" || case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
+        color("dimgrey",1) case_adapter(case_design);
+        color("dimgrey",1) translate([-180, 0, 4]) rotate([270,0,0]) io_plate();
+    }
     // ui access panel
     if(bottom_access_panel_enable == true) {
         if(access_panel_rotation == 0) {
@@ -437,10 +443,6 @@ if (view == "platter") {
     if(case_design == "paper_split-top" || case_design == "paper_full-top") {
         case_folded(case_design);
     }
-    if(case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
-        color("dimgrey",1) case_adapter(case_design);
-        color("dimgrey",1) translate([-180, 0, 4]) rotate([270,0,0]) io_panel();
-    }
     if(case_design == "tray" || case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
         echo(Case_Width=width+2*sidethick,Depth=depth,Top=top_height,Bottom=bottom_height);
     }
@@ -694,13 +696,18 @@ if (view == "model") {
                 }
             }        
         }
-        if(case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
+        if(case_design == "adapter_mini-stx" || case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
             color("dimgrey",1) case_adapter(case_design);
             if(sbc_off == false) {
                 translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z])
                     sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, false);
             }
-            color("dimgrey",1) translate([-8.79,-4.5,-2]) io_panel();
+            if(case_design == "adapter_mini-stx") {
+                color("dimgrey",1) translate([-1.2,-4.5,-2]) io_plate();
+            }
+            else {
+                color("dimgrey",1) translate([-10.79,-4.5,-2]) io_plate();
+            }
         }
         // ui access panel
         if(bottom_access_panel_enable == true) {
@@ -797,7 +804,7 @@ if (view == "part") {
         }
     }
     if(individual_part == "bottom") {
-        if(case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
+        if(case_design == "adapter_mini-stx" || case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
             case_adapter(case_design);
         }
         else {
@@ -834,9 +841,9 @@ if (view == "part") {
                 case_side(case_design,"left");
         }
     }
-    if(individual_part == "io_panel") {
-        if(case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
-            translate([0, 0, 4]) rotate([270,0,0]) io_panel();
+    if(individual_part == "io_plate") {
+        if(case_design == "adapter_mini-stx" || case_design == "adapter_mini-itx" || case_design == "adapter_flex-atx" || case_design == "adapter_mini-dtx" || case_design == "adapter_dtx" || case_design == "adapter_micro-atx" || case_design == "adapter_atx") {
+            translate([0, 0, 4]) rotate([270,0,0]) io_plate();
         }
     }
     if(individual_part == "accessories") {
diff --git a/sbc_case_builder_accessories.cfg b/sbc_case_builder_accessories.cfg
index afdb56d..919fb47 100644
--- a/sbc_case_builder_accessories.cfg
+++ b/sbc_case_builder_accessories.cfg
@@ -596,7 +596,7 @@ accessory_data = [
 
         
      // StarFive
-     ["visonfive2_shell",
+     ["visionfive2_shell",
      "sub","rectangle",89,9.25,11,"top",[0,0,0],["case",true,true,false],[10,10,15],[[1,1,1,1]],[false,10,2,"default"],
      "add1","round",11.25,-.5,12,"top",[0,0,0],["case",true,true,true],[2,0,17],[0],[false,10,2,"default"],
      "add1","round",29.75,-.5,12,"top",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"],
@@ -604,15 +604,22 @@ accessory_data = [
      "add1","round",60.875,-.5,12,"top",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"],
      "add1","round",81.125,-.5,12,"top",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"]],
      
-     ["visonfive2_stacked",
+     ["visionfive2_stacked",
      "sub","rectangle",89,9.25,11,"top",[0,0,0],["case",true,true,false],[10,10,15],[[1,1,1,1]],[false,10,2,"default"]],
      
-     ["visonfive2_tray",
+     ["visionfive2_tray",
      "add1","round",11.25,-.5,9,"bottom",[0,0,0],["case",true,true,true],[2,0,17],[0],[false,10,2,"default"],
      "add1","round",29.75,-.5,9,"bottom",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"],
      "add1","round",50,-.5,9,"bottom",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"],
      "add1","round",60.875,-.5,9,"bottom",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"],
-     "add1","round",81.125,-.5,9,"bottom",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"]]
-           
+     "add1","round",81.125,-.5,9,"bottom",[0,0,0],["case",true,true,true],[3,0,17],[0],[false,10,2,"default"]],
+
+
+     ["adapter_mini-stx_m1s",
+     "add2","standoff",5,100,0,"bottom",[0,0,0],["sbc",false,false,false],[0,0,0],[[5.75,5,3.6,10,4,"countersunk","hex",false,false,4.5,5.1]],[true,10,2,"default"], 
+     "add2","standoff",5,125,0,"bottom",[0,0,0],["sbc",false,false,false],[0,0,0],[[5.75,5,3.6,10,4,"countersunk","hex",false,false,4.5,5.1]],[true,10,2,"default"], 
+     "add2","standoff",113,100,0,"bottom",[0,0,0],["sbc",false,false,false],[0,0,0],[[5.75,5,3.6,10,4,"countersunk","hex",false,false,4.5,5.1]],[true,10,2,"default"], 
+     "add2","standoff",113,125,0,"bottom",[0,0,0],["sbc",false,false,false],[0,0,0],[[5.75,5,3.6,10,4,"countersunk","hex",false,false,4.5,5.1]],[true,10,2,"default"],
+     "model","hk_m1s_ups",2,97,5,"bottom",[0,0,0],["sbc",false,false,false],[0,0,0],[0],[true,110,2,"default"]],
      ];