... 20/24 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 ... , Plug FLOPPY con, check +12V, +5V;Remove FLOPPY con, Plug SATA con…, check +12V, +5V,+3.3V;SpecificationVoltage source: 20/24 ...