Competitive price; CE approved; LED; PC 20/24 Pin ; POWER SUPPLY TESTERProduct IntroductionThe power supply ... your 24 pin power supply connector to mini tester;Check LED light if ON or OFF (+5V, +12V,+3.3V,- ... +12V;Remove P4(P6 /P8) con, Plug FLOPPY con, check +12V, +5V;Remove FLOPPY con, Plug SATA con…, check +12V, +5V,+3.3V; ... pin(p4),8 pin(Dual-CPU). 6 pin (PCI-Express) LED power supply tester