The meaning of the lines of the computer switching power supply
Blue: on behalf of -12V power cord (to the serial port to provide EIA power)
White: on behalf of -5V power line (floppy lock phase data separation circuit)
Purple: on behalf of +5.5 StandBy power cord (shut down after the motherboard for a small part of the circuit to provide power to detect a variety of boot commands)
Green: on behalf of the PS-ON signal line (motherboard power on / off signal line, when there is a certain voltage is not connected, you can directly switch to a black line as a test, you can also see the boot button when the boot)
Black: The ground of the system circuit
Red: on behalf of +5 V power line (motherboard, hard drive, optical drive and other hardware on the chip operating voltage).
Yellow: on behalf of +12 V power cord (hard drive, optical drive, fan and other hardware on the operating voltage, and -12V at the same time to the serial port to provide EIA power).
Orange: represents + 3.3V power cable (directly to DIMM, AGP slot).
Gray: on behalf of the PG signal line (power status information line, it is the other power lines through a certain circuit to calculate the results, when the press the computer after the first key, the signal that the power can be turned on without signal that there is faulty motherboard automatic monitoring) T
Color can not explain the problem, depends on the line of English Caixing
