COOLMAX ZX Series ZX-500 500W ATX12V v2.2 / EPS12V v2.91 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply Fans: 1 Main Connector: 20+4Pin +12V Rails: Single PCI-Express Connector: 1 x 6-Pin, 1 x 6+2-Pin SATA Power Connector: 5 Efficiency: Up to 80% Over Voltage Protection: Yes Input Voltage: 115V ~ 230V