Cooler Master GX II - 650W 80 PLUS Bronze Power Supply with Non-Stop USB Charging Non-stop power to USB ports using included charger cable - charge your smartphones or tablets via USB even when the computer is off Single +12V rail for superior load balancing and graphics card compatibility 80 plus Bronze certification means highly efficient performance Extremely quiet 120 mm HDB fan with a long lifespan USB devices that do not fully comply with the USB standard (some Apple devices) will not charge when the PC is off Multiple protection design - OVP, UVP, OCP, OPP, SCP, OTP Highly reliable with MTBF greater than 100,000 hours