Basically the connects to the machine with a 4 pin connector. All voltages are DC. 24v for the stand to operate on, 1 pin for the upper optic voltage, 1 pin for the lower optic voltage (both a max of 12v) and a ground. The stand itself operates on 24v from a power supply that is also powering other components. The supply isn't the issue as it was well oversized, it's the circuitry inside the stand and the voltage divider.