Mfr Part Number: SFX-AP500W Features:Maximum Power: 500 W Apevia 500W SFX Power Supply Another view of the power supply High stability with 5% tolerance of 5V, 3.3V & 12V output Supports single 12v output for higher power usage Look at the label Input:Type: SFX Voltage: 115 - 230 V Current: 8A for 115V AC, 4A for 230V AC Frequency Range: 50 - 60 Hz Fan: 1x 80mm Automatically Thermal Sensing Fan Output: +3.3V  12A, +5V  14A, +12V  33A, -12V  0.3A, +5Vsb  2.5A Connectors: 1 x 20/24pin Main Power / 1 x P4/P8 12V / 1 x PCIe 2+6Pin / 3 x Serial ATA / 2 x 4Pin Peripheral / 1 x Floppy Color: Black Dimensions (WxLxH): 125mm x 100mm x 63.5mm (4.92" x 3.94" x 2.5") - L x W x H