BFG Tech GX 550W 20+4-pin Modular ATX Power Supply w/SATA, PCI-E & 8-pin +12V ATX Connector (Black) 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