... noise ,Super low noise fan automatically control .Short circuit protection on all out put .Over voltage protection &over current protection . ... % hi-pot test ,100% burn in ,high temperature cycled on/offSix protect function:OVP,UVP,OCP,OLP,SCP,anti-lightning ... 3.3V magnetic designConnector Color:Black Coloured ConnectorsOn/Off Switch:Power On/Off Switch+12V Rails:Enhanced Four rails +12V1, +12V2,+12V3 ...