... price; CE approved; LED; PC 20/24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply tester ... power supply ;Plug-in your 24 pin power supply connector to mini tester;Check LED light if ... 12V, +5V,+3.3V;SpecificationVoltage source: 20/24 pin (ATX-connector)Voltage test: +12V,-12V,+5V-5V,+3.3V ... : Floppy, HDD, CDROM, SATA, 4 pin(p4),8 pin(Dual-CPU). 6 pin (PCI-Express) LED power supply tester