How to connect power LED to a motherboard

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The power light emitting diode is a small light diode installed on the front panel of the computer case. If connected to the motherboard, the power LED lights up steady green when the computer is turned on, and starts to blink or lights in yellow when the computer goes into sleep mode. This LED is not important for the computer's functionality, but it allows you to easily identify if your machine is in sleep mode.

Skill level:
Moderately Easy

Things you need

  • Motherboard manual

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  1. 1

    Switch off the computer and disconnect the power cord on the back panel.

  2. 2

    Open the computer case by removing the side panel. Then lay the computer on its side. Note that the motherboard is attached to the opposite side panel with screws.

  3. 3

    Look for the system panel connector cluster that is in the bottom right corner of the motherboard. This cluster includes at least five different connectors, including a power switch, reset, a case's speaker, power and hard drive LEDs.

  4. 4

    Consult the motherboard's manual and find out which pins in the cluster correspond to the power LED connector. The manual will have a scheme on which the polarity ("+" and "-") of the connection is marked.

  5. 5

    Locate a computer case cable that goes from the power LED. This cable has a connector on the end that would fit into the pins on the motherboard.

  6. 6

    Touch the metal surface of a large object to discharge static electricity before doing any work with electronic parts such as the motherboard. For example, touch an unpainted metal part of the computer case.

  7. 7

    Insert the connector of the power LED cable into the corresponding pins (see Step 4) on the motherboard using a gentle force.

  8. 8

    Close the computer case and power up your machine.

Tips and warnings

  • Static electricity can severely damage the motherboard and other computer components. This damage is not covered by the manufacturer's warranty.

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