... Supply Tester; PSU Tester.The SD power supply tester is a robust voltage tester for PC power supply.ATX,BTX and ITX ... too,then the power is failed SpecificationVoltage source:20/24pin(ATX-connector) Voltage test:+12V,-12V,+5V,-5V,+3.3V,5V ... ,CDROM,SATA,4pin(P4),8pin(Dual-CPU),6pin(PCI-Express) PSU Tester