... 24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply tester is a robust voltage, tester for PC-power supply ATX, BTX and ITX compliant, power supplies can be tested ... .The methods of operation Turn-on your power supply ;Plug-in your 24 pin power supply connector to mini tester;Check LED light ... ,-12V,+5V-5V,+3.3V,5V Stand by(SB) 12V, power Good (PG)Connectors: Floppy, HDD, CDROM, SATA, 4 pin ...