Power SupplyTo ensure the lifetime of the power supply,pls don't use full load when you use it.We recommend the use power should be 80% of the rated power.For example: the label of the power supply is 500W,use power should be:500W*80%=400W120W Three Group Triple Output Multi Voltage Switching Power Supply SMPS T-120B 5V 12V -12V T-120C 5V 15V -15V T-120D 5V 12V 24V