Feature:1. Multi Guard: This 550W power supply provides provides guard for short circuit, overcurrent, overvoltage and overload.2. Auto Break: This gaming power supply automatically cuts off the input to prevent damage to the power supply and circuit when the temperature is too high.3. 120mm Bearing: This desktop system power adopts 120mm bearing with dynamic hydraulic pressure. Output with low ripple and noise.4. Quiet Fan: This 550W desktop power is designed with quiet and powerful fan with 9 blades, which ensures fast cooling, support discrete graphics card.5. High Safety: This desktop replacement power adopts circuit guard for OCP/UVP/OVP/SCP/OPP/OTP, safer and more stable.Specification:Item Type: 550W Power SupplyMaterial: Aluminium AlloyVoltage: 180-264VRated Power: 400WPeak Power: 550WMotherboard Interface: 1 x 20+4PINCPU Interface: 1 x (4+4) PINGPU Interface: 1 x 6 + 2 to 6 + 2PINFan Interface: 2 x Large 4PINHard Disk Interface: 4xSATAProduct Size: Approx. 150 x 140 x 85mm / 5.9 x 5.5 x 3.3in ( Manual Measurement, Slight Error May Exist ).Package List:1 x550W Power Supply1 x User Manual