... user, as well as for a quick functional check in specialized trade.The methods of operation Turn-on ... your 24 pin power supply connector to mini tester;Check LED light if ON or OFF (+5V, +12V,+3.3V ... ,-5V,-12V,+5VBS,PG);Plug HDD con, check +12V, +5V; ... P8) con, Plug FLOPPY con, check +12V, +5V;Remove FLOPPY con, Plug SATA con…, check +12V, +5V,+3.3V;SpecificationVoltage ...