How to Use PCI-E Power for an AGP Card 12V Power Supply

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How to Use PCI-E Power for an AGP Card 12V Power Supply
PC power supply connectors can be adapted to fit many needs. (medusa colour image by robert mobley from Fotolia.com)

Use a PCI-E power connector to supply 12 volt power to an AGP video card when the required adaptor is not available on the power supply. The power connectors on a typical ATX power supply can be adapted to supply power to any device that uses the same voltage by using a commercial adaptor. Many AGP video cards use a standard Molex four-pin, 12 volt power connector to obtain their power and a splitter or adaptor can be found in either configuration to make the connection.

Skill level:
Easy

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Things you need

  • 6-pin PCI-E female to 4-pin male Molex power adaptor cable or
  • 4-pin female Molex to dual 4-pin male Molex power adaptor cable
  • Screwdriver
  • Flashlight

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Instructions

  1. 1

    Back up any important files and settings on the computer prior to working inside the case.

  2. 2

    Power down the computer by clicking "Start" (Windows Orb) and "Shutdown" and remove the power cord from the outlet or from the power supply unit.

  3. 3

    Connect one end of the 6-pin PCI-E female to 4-pin male Molex power adaptor cable to an available PCI-E power supply lead. Alternatively connect one end of the 4-pin female Molex to dual 4-pin male Molex power adaptor cable to an available Molex 4-pin hard drive power supply lead.

  4. 4

    Connect the other end of the power adaptor to the video card.

Tips and warnings

  • Use the power supply connectors that are built into the power supply whenever possible. Back up the files and settings on the computer prior to working on the power connections.
  • Always disconnect the main power cable prior to working on the inside of the computer.

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