... Product IntroductionThe SD power supply tester is a robust voltage, tester for PC-power supply. ATX ... ,BTX and ITX compliant, power supplies can be tested. LCD’s indicate the status of voltage ... no flicker then the power supply output voltage is normal.c. If a certain voltage ... SpecificationVoltage source : 20/24pin (ATX-connector)Voltage test : +12V,-12V,+5V,-5V,+ ...