Be-Quiet Straight Power E9 500W. Nominal power: 500 W, AC input voltage: 100 - 240 V, Voltage tolerance: 93 %. Fan diameter: 135 mm, Fan location: top, Cooling type: active. Motherboard power connector: 20+4 pin ATX. Noise level: 19.2 dB. Width: 150 mm, Depth: 160 mm, Height: 86 mm