Bracket to mount a BSMCE04U-PP I/O board to a panel with the USB port exposed. Probably don't want to exceed 1/8" on the panel depth. Mounts to the panel with M3 screws. The board is secured to the bracket with M3x18 socket head cap-screws and hex nuts. Insets are cut to hold the nuts and cap-screws.

FreeCAD source file is included.

Prusa

I3 MK3S

No

Yes

10% Gyroid

Since the screw holes are along different axes, you'll need to support the holes on the horizontal axis and they're kind of a pain to clean out. Print with the panel facing face against the build plate to minimize the amount of support material required.