... /24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply tester is a robust voltage, tester for PC-power supply ATX, BTX and ITX ... power supply connector to mini tester;Check LED light if ON or OFF (+5V, +12V,+3.3V,-5V,-12V,+5VBS,PG);Plug HDD ... /24 pin (ATX-connector)Voltage test: +12V,-12V,+5V-5V,+3.3V,5V Stand by(SB) 12V, power Good (PG)Connectors: Floppy, HDD ...