This a simple board holder for the Treedix USB tester boards (ASIN B0BW8ZC7YD).
It uses the top two holes on the board to index and it protects the back of the PCB from whatever surface you're on.
If printing with PLA, I recommend using 100% infill because the “poles” are only 2.75 mm in diameter and are relatively fragile. Flexible filaments wouldn't have the same issue.
No supports needed.
The author marked this model as their own original creation.