... /24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply tester is a robust voltage, tester for PC-power supply ATX, BTX and ITX ... Turn-on your power supply ;Plug-in your 24 pin power supply connector to mini tester;Check LED light if ON or ... OFF (+5V, +12V,+3.3V,-5V,-12V,+5VBS,PG);Plug HDD con ...