The file 'Steam Controller Dongle Holder 3D Printer Model' is (stl) file type, size is 7.9MB.
I tried printing the full battery door but when removing supports some of the important bits snapped off. Instead of trying to reprint the whole thing, I just sliced off the dongle holder and printed it by itself, gluing it onto the controller.
In hindsight, I should have printed it in black!
SteamExternalDongle.stl | 20.9MB |