be quiet! SFX Power 350W. Nominal power: 350 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz. Fan diameter: 80 mm, Fan speed: 4000 RPM, Cooling type: active. Motherboard power connector: 20+4 pin ATX. Width: 125 mm, Depth: 100 mm, Height: 63.5 mm. Mean time between failures (MTBF): 100000 h