How to Extend a Cat5e Cable

Written by jack gorman
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How to Extend a Cat5e Cable
Extend that CAT-5e or Ethernet wire that's just a bit too short. (ethernet image by Emmanuel Bergère from

If you have a Cat-5e cable that's too short, you can make it longer. Many homes and businesses today come with built-in Cat-5 or Cat-6 cable that runs various communications devices, particularly wired Internet and file sharing. While it's nice to have built-in wires, sometimes the wires come up a bit short. But you don't have to run a whole new wire just to get that extra 5 feet.

Skill level:

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Things you need

  • Modular in-line coupler (8-pin)
  • Cat-5e wire (as long as is needed)
  • Electrical tape (optional)

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  1. 1

    Insert one end of your existing Cat-5e wire into one end of the modular in-line coupler. The pin that sticks out of the bottom of the wire end should face the indent in the coupler.

  2. 2

    Insert one end of your new CAT-5e wire into the other end of the modular in-line coupler.

  3. 3

    Wrap the entire connection with electrical tape. This is an optional step, but the tape provide extra stability for the connection and is highly recommended, especially if you are inserting the wire into a wall or somewhere where it will not be readily accessible.

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