CoolMax M-500B. Nominal power: 500 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Fan diameter: 120 mm, Fan location: top, Cooling type: active. Motherboard power connector: 20+4 pin ATX. Width: 150 mm, Depth: 142.2 mm, Height: 83.8 mm. Safety: UL, CUL, CSA, TUV, FCC