Model - PS550-F12 Features ~ ATX Ver2.2 specification compliant ~ Supporting latest Intel Core2 Duo & AMD Athlon 64/64FX (V.2.01) ~ Ultra silent operation with intelligent 120mm fan speed control ~ OCP, UVP, OVP, OLP, OTP and SCP circuit to ensure system safety. Connectors - 20+4Pin Motherboard Connector x1 - 4 Pin CPU x 1 - SATA Connector x 2 - 4 Pin Peripheral molex Connector x3 - 4 pin Floppy Drive Power Connector x1