I bought a 3 pack of https://www.amazon.com/gp/product/B01HCXMBOU/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 All 3 seem to work just fine and are detected as pro micros.

My coding on the other hand sucks. I can't get my simple button box working. Everything looks good, but I'm getting different switches reading the same button pressed.