single USB cover mounting plate

this is an external cover plate for common 12v to 5v usb converters found on ebay. I designed it because it was not possible to mount externally without making a large hole.

https://www.ebay.com/itm/DC-12V-To-5V-3A-15W-USB-Output-Power-Adapter-Converter-Module-For-Car-Boat-TB/202503382046?hash=item2f2624641e:g:x6kAAOSwjRtbNfzx:rk:8:pf:0