P/ N SP-450M Model SP-450AH3CCB Type Intel ATX 12V 2.3 Max. Output Capacity 450W Peak Output Capacity 495W Color Black Dimension ( H x W x D) 86mm x 150mm x 160mm PFC  Power Factor Correction Active PFC Power Good Signal 100-500 msec Hold Up Time 16msec ( minimum) @ 80% of full load at 115Vac/ 230Vac input. Input current 6A Input Frequency Range 47 Hz - 63 Hz Input Voltage 100 Vac- 240 Vac Operating Temperature 0 to + 50 Operating Humidity 20% to 90% , non-condensing Storage Temperature -20  to + 70  Storage Humidity 5% to 95% , non-condensing Cooling System 140mm Fan: 1800 R.P.M. 10% Efficiency 82-88% efficiency @ 20-100% load MTBF 100, 000 hrs minimum Safety Approval UL/ CUL/ TUV/ CE/ FCC and BSMI PCI-E Connector PCI-E 8pin x 1, PCI-E 6+ 2pin x 1