One of the very first 3D models I've engineered myself; a relatively simple holder for SD cards and USB sticks

Printing

This has been tested with Prusa MK3S+, Prusa PLA, 0.20mm SPEED preset; I used variable layer height (adaptive 0.75) to ensure the top details display appropriately.

The default size (with approximately 1mm tolerance as modeled) seems to have a bit of loose fit both for USB and SD; experimentation with scaling may yield slightly tighter fit, if desired.