+The KBD75 has two revisions. Revision 2 has a USB C port and allows a numpad layout. `.hex` files made
+for KBD75 revision 1, will still work for revision 2. `.hex` files made for revision 2 (excluding the numpad)
+will also still work on revision 1. Both revisions share the same switch matrix but have switch holes in
+different areas.
+