Thermaltake PS-TRS-0550NPCWAU-2, Output 550W, Black, PFC Power Factor Correction Active PFC, Power Good Signal 100-500 msec, Hold Up Time 16msec (minimum) within 60% load, Input 7A max, Input Voltage 230 Vac, MTBF 100,000 hrs minimum. The TR2 S Power Supply range is built for PC users that are looking for reliable, high efficiency and dependable power at an affordable price. Built with 80PLUS 230V certified efficiency with compatibility for all the latest hardware.