Product Detail BFG Tech GX 550W 20+4-pin ATX Modular Power Supply General Features: Black color Modular type 550-watts One (1) Silent 140 mm intake fan ATX 12V 2.2 compliant Dual 12V rails Sleeve mesh cables PCI Express ready BFG Thermal Control Technology Protection Circuitry Efficiency: 80% typical MTBF: 80,000 hours at 25 C Works with AGP, PCI and PCI Express motherboards . The "BFG GX-550 - Power supply internal - ATX12V 2.2 - 550 Watt" is best product for you. We recommended BFG GX-550 - Power supply internal - ATX12V 2.2 - 550 Watt