VisionTek 900347 650W ATX12V SLI Ready CrossFire Ready Power Supply Fans: 1 Main Connector: 20+4Pin +12V Rails: 2 PCI-Express Connector: 1 x 6-Pin, 1 x 6+2-Pin SATA Power Connector: 6 Over Voltage Protection: Yes Input Voltage: 115 / 230 V Input Frequency Range: 50/60 Hz