Dell Optiplex GX520 Series 100-120V 50-60Hz 8.0A 220W ATX Power Supply N8374 0N8374 CN-0N8374.Dell Part Number: N8374 0N8374 CN-0N8374Model Number: N220P-00Compatible Part Numbers: NPS-220AB ACompatible Models: Dell Optiplex GX520 SeriesSpecifications:Input: 100-120V 8.0A 50-60Hz 200-240V 4.0A 50-60HzOutput: +5V --- 17.0A +12V --- 13.0A +5VFP --- 1.0A -12V --- 0.5A +3.3V --- 4.0AMax: 220W