CORSAIR CX-M Series CX550M 550W 80 PLUS BRONZE Haswell Ready ATX12V & EPS12V Modular Power Supply Fans: 1 x 120mm Sleeve fan Main Connector: 20+4Pin +12V Rails: Single PCI-Express Connector: 2 x 6+2-Pin SATA Power Connector: 5 Efficiency: Up to 85% Over Voltage Protection: Yes Input Voltage: 100 - 240 V