Antec HCG M Series HCG-520M 520W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply - Intel Haswell Fully Compatible Fans: 1 Main Connector: 20+4Pin +12V Rails: Single PCI-Express Connector: 2 x 6+2-Pin SATA Power Connector: 5 Efficiency: Up to 87% Over Voltage Protection: Yes Input Voltage: 100 - 240 VAC ±10%