This is a Model, what enables two Unifi FlexMinis to be mounted into the RackPiHD
I actually just needed one, but the second is nearly free of charge, so I went for two.
I printed mine in PLA and 0.6 Nozzle, that worked, with the overhangs, barely. The one without Vents will work and prints faster. the Opening for the USB is there onboth STls
The author remixed this model.