AC-DC Quad output enclosed power supply; Output 5Vdc at 15A +3.3Vdc at 15A +15Vdc at 5A -15Vdc at 1A Universal AC input / Full range Built-in active PFC function, PF>0.95 Forced air cooling by built-in DC fan CH4: Polarity is selectable ± Fixed switching frequency at 100KHz