Model # : ATX-250-12ZD HP P/N: 5187-1098 250watts maximum output Single ball bearing fan design Built-in voltage overload protection Voltage switch for 115/230V AC input Certified by UL, CB, CE, TUV, & FCC Dimensions: 5.9 W x 3.4 H x 5.5 D - Inches This Power Unit Has 4 Peripheral, 2 Floppy, 1 ATX connector, 1 ATX12V Connector