How to Test an Ethernet Cable

By Jordan Baughman

Troubleshooting your Ethernet cable can help answer a lot of questions if you're having network issues.
i ethernet cable 2 image by BlueMiniu from

Dealing with wired network issues can be incredibly frustrating when you aren't sure why your computer won't connect to the Internet. It's always a good idea to check out networking hardware like your Ethernet cables first, as decayed cords are a very common reason for connectivity issues. Checking out the most common possibilities first will save you the trouble of running through all of your other software and networking hardware looking for the reason for your problem. If the Ether cord is the issue, replacing it is fairly inexpensive.

Step 1

Restart your router or modem by unplugging it, waiting a minute and then plugging it back in.

Step 2

Test out your Internet speed with a free online speed test application (see Resources).

Step 3

Unplug your Ethernet cable and replace it with a new one.

Step 4

Test the internet speed of the new Ethernet cable with a free online speed test application (see Resources).

Step 5

Contact your ISP if there is no discernible difference between either Ethernet cable.