UBS port mount/case/holder/thingamajig that lets you screw a USB port to a flat surface without worry that the port will end up damaged, or fighting with glue or tape. Just some good ol' screws. 

inner slot measurements - 13,45 x 7,45mm
screwing holes - countersunk 2,5mm screw

used this kind of USB port, I bent the positional pins inside (you can remove them as well, I was unsuccessful at that, so I just bent them inside)

my printing settings:
brim, tree supports, 
print oriented so the main hole is vertical, 
infill 35%,
cubic subdivision, 
top/bottom pattern concentric, 
alternate extra wall turned on

in my print, the holes look kind of wonky because the printer acted up a bit due to printing with PETG (which is not really obligatory to make it work, I just don't have black PLA at hand)