Specification : Total Wattage 500W Elegant black PSU casing with full black mesh cables ATX12V Ver.2.30 compliant with ATX12V Ver.2.31 High efficiency PSU, 80+, APFC,up to 85% efficiency Single 12V Rail for high compatibility and extreme high current output Longer 20 + 4 and 4 + 4 pins up to 550mm is easy for high-end tower chassis installation 12cm silent black fan with smart thermal fan speed control circuit Full protection functions with OVP / UVP / OPP / SCP / SIP /OCP Safety and EMC certified by CE ECO friendly by RoHS and Erp 2013 directives