Ubiquiti EP-54V-150W-AC-AU, Power AC/DC 150W for 110 - 240VAC Input, Voltage AC/DC for 110-240VAC Input , 54V Output, LED System On/Off, ESD/EMP Protection Air ± 8kV; Contact ± 6kV. The EP-54V-150W-AC is an AC to DC PSU module designed for use with the EdgePower EP-54V-150W. It can be used as an auxiliary PSU to deliver an additional 150W of power output, or as a backup to the primary PSU.