Power Supply ATX 500W GAMEMAX GE-500, 80+, Active PFC, 120mm fan, Retail. legant black PSU casing with full black mesh cablesATX12V Ver.2.30 compliant with ATX12V Ver.2.31High efficiency PSU, 80+, APFC,up to 85% efficiencySingle 12V Rail for high compatibility and extreme high current outputLonger 20 + 4 and 4 + 4 pins up to 550mm is easy for high-end tower chassis installation12cm silent black fan with smart thermal fan speed control circuitFull protection functions with OVP / UVP / OPP / SCP / SIP /OCPSafety and EMC certified by CEECO friendly by RoHS and Erp 2013 directiveshttp://www.gamemaxpc.com/product/showproduct.php?lang=en&id=273