How many volts are the computer power cable harness?
The output voltage of the same color output wire harness is the same, and the user can choose to use it according to actual needs. The output wires on the computer power supply have bai9 colors. The meaning of the various colors output wires is:
Red +5V Power supply for main board circuit, memory module power supply, optical drive, hard disk and other equipment.
Yellow +12V CPU and graphics card power supply; power supply for standard drive circuits, such as optical drives and hard disk motors.
Orange +3.3V is now mostly used for SATA hard disk power supply.
Purple +5V (USB) USB device power supply, support the power-on function of USB keyboard and mouse, still power supply after shutdown.
Black ground wire (0V) A necessary part of the power supply circuit.
Green PS-ON power-on signal cable, when it is short-circuited with the ground wire, the power will be activated. When the signal level of this port is greater than 1.8V, the main power is off; if the signal level is lower than 1.8V, the main power is on .
Gray Power Good monitoring wire connects the motherboard and the power supply to play a signal feedback function. Generally, if the output of the gray wire P-OK is above 2V, the power supply can be used normally; if the output of P-OK is below 1V At this time, this power supply will not guarantee the normal operation of the system and must be replaced.
Blue -12V old serial port, rarely used now.
The white -5V ISA bus is rarely used now, and some manufacturers use it instead of the black wire as the ground wire