OCZ ZS550W. Nominal power: 550 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Fan diameter: 135 mm, Fan location: side, Cooling type: active. Motherboard power connector: 20+4 pin ATX. Width: 150 mm, Depth: 160 mm, Height: 86 mm. Mean time between failures (MTBF): 100000 h