diff --git a/case/adapter-case.scad b/case/adapter-case.scad
index 04d1bd7..9fe2079 100644
--- a/case/adapter-case.scad
+++ b/case/adapter-case.scad
@@ -1,5 +1,3 @@
-use <threadlib/threadlib.scad>
-
 // Make circles lovely and round
 $fa = 1; $fs = 0.5;
 
@@ -16,6 +14,13 @@ module stacker() {
     }
 }
 
+module trs_support() {
+    intersection() {
+        cube([12, 25, 12], center=true);
+        rotate(-45, [0, 1, 0]) cube([12, 25, 12], center=true);
+    }
+}
+
 difference() {
     union() {
         import("seeed_xaio_case.stl", convexity=3);
@@ -29,15 +34,36 @@ difference() {
         translate([0, 0, 15.0]) stacker();
         translate([0, 0, 17.5]) stacker();
         translate([0, 0, 20.0]) stacker();
+
+        // Add some support for inserting the TRS plug
+        intersection() {
+            union() {
+                translate([13, 10, 16]) rotate(60, [0, 0, 1]) trs_support();
+                translate([13, -10, 16]) rotate(-60, [0, 0, 1]) trs_support();
+            }
+            cube([22.5, 18, 60], center=true);
+        }
     }
 
+    // Carve out above USB C port
     translate([10, -4.79, 4.79]) cube([5, 9.58, 3]);
-    translate([10, 0, 9]) cube([10, 18.36, 6], center=true);
 
+    // Carve out space to slide the XIAO in
+    intersection() {
+        translate([10, 0, 10]) cube([10, 18.36, 8], center=true);
+        translate([10, 0, 6]) rotate(45, [1, 0, 0]) cube(15, center=true);
+    }
 
-    translate([0, 0, 9.5]) rotate(90, [1, 0, 0]) cylinder(h=30, d=0.8, center=true);
-    translate([0, -9, 12]) rotate(90, [1, 0, 0]) tap("M4", turns=3);
-    translate([0, 11, 12]) rotate(90, [1, 0, 0]) tap("M4", turns=3);
+    // Hookup wire
+    translate([0, 0, 9.5]) cube([1, 30, 0.8], center=true);
 
-    translate([11, 0, 18]) rotate(90, [0, 1, 0]) tap("M6", turns=3); //cylinder(h=50, r=4);
+    // 8-32x 1/4 screws
+    translate([0, 0, 12]) rotate(90, [1, 0, 0]) cylinder(h=30, d=3.8, center=true);
+
+    // 3.5mm TRS jack
+    translate([10, 0, 18]) rotate(90, [0, 1, 0]) cylinder(h=3, d=5.5);
+
+    // Piezo buzzer
+    translate([-12, 3.5, 15]) cube([5, 1, 1], center=true);
+    translate([-12, -3.5, 15]) cube([5, 1, 1], center=true);
 }