... PC 20/24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply tester is a robust voltage, tester for PC-power supply ATX, BTX and ITX compliant ... The methods of operation Turn-on your power supply ;Plug-in your 24 pin power supply connector to mini tester;Check LED ... , power Good (PG)Connectors: Floppy, HDD, CDROM, SATA, 4 pin(p4),8 pin(Dual-CPU). 6 pin (PCI-Express) LED power supply tester ...