Descriptions for Computer Power Cords

Meaning of different power cord color

Power cord color: Green cord is the boot cord, the black cord is ground cord, make green and black wires short circuit, and the power will begin to run, try to power the device, which is a simple way to determine whether the power is good or bad. In addition, yellow represents the 12V power supply, the red represents 5V power supply, but do you understand other colors, as well as more detailed computer power cords works? Learn more about these help you have a more in-depth understanding of the computer as well as decide and maintain computer failure. Now let's learn more, in particular, to make in-depth explanation of the purple cord, the green cord and the gray cord and boot principle.

Yellow: +12 V

Yellow cord should be a large number in the power supply, with adding the CPU and PCI-E graphics card powered ingredients, +12 V role is pivotal in the power supply. +12 V has been providing power for hard disk, CD-ROM drive, floppy drive spindle motor and seek motor operating voltage and serial devices, and provide circuit logic signal level and ISA slots. When +12 V voltage output is not normal, it often causes instability of the hard drive, CD-ROM drive, floppy drive disk read performance. When the voltage is low, the performance of the optical drive pick disk seriously, logical bad sectors of the hard disk increase, and there are often bad sectors, the system is easy to hang, and cannot be used normally. When it is high, the optical drive speed is too high, prone to runaway, and is prone to have the phenomenon of disk burn, the hard disk performs to stall, turn to fly. Currently, the +12 V power supply shortage will directly affect the PCI-E graphics performance, and impact on CPU, direct result the crash.

Blue:-12V

-12V voltage provides serial logic to determine the level, little current is needed, which is below 1A in general. Even if the voltage deviation is too large, it will not cause a malfunction, because the 0 level of logic level ranges from -3V to-15V, and there is a very wide range.

Red: +5 V

The number of +5 V wires and yellow wires is considerable, +5 V power supply is available to the operating voltage of the CPU and PCI, AGP, the ISA and other integrated circuits, which is the main power for computer. Currently, CPU use mixed supply of +12 V and +5 V, the requirement for it is not so high. Only the latest Intel ATX12V 2.2 version has enhanced the +5 V power supply capacity, strengthen the power of dual-core CPU. Its power quality is directly related to the stability of the computer system.

White:-5V

There is few commercially available power with a white computer monitor cables, white-5V determines the level for logic circuits, the current is very small, generally does not affect the system to work, which is basically dispensable.

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