Hello All, I just got my OB Mini Mill built, I bought the cnc xpro v3 board with it. The board powers on and connects to GBRL Panel and the activity lights flash on the usb indicator, but the stepper drivers do not appear to have any power. I have connected both a 500w atx power supply, and an 800w hp 12.5v server power supply at separate times and neither seems to power the motors. When I plug the Atx power supply in, and then the usb to the computer the fans on the power supply turn on. When I unplug the atx and plugin the hp server power supply I can read 12.5v on the 2 input terminals, but again the motor drivers show no indication of power. And the motors do not move or make any noise when attempting to job in GRBL panel. Any ideas? Thanks, Nuker- I have also tested 3 stepper motors after checking the wiring 20 times, the coils are in the correct places for A and B coils, and I have confirmed with an ohm meter and continuity meter.