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How To Test Ethernet Cable With Computer

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Ethernet cables are commonly used to connect devices such as computers, routers, and servers to the internet or to local networks. However, it is important to ensure that the cables are working properly before use, as faulty cables can lead to slow connections or even complete network failure. In this article, we will discuss how to test an Ethernet cable with a computer.

Step 1: Turn off all devices

Before testing the Ethernet cable, it is important to turn off all devices that will be connected with the cable, including PCs, routers, and servers. This is to avoid any damages to the devices in case of a short circuit.

Step 2: Connect the cable

Next, connect one end of the Ethernet cable into the Ethernet port on the computer and the other end into the port on the router or server you want to test.

Step 3: Check the Link LED

Most Ethernet cables have a Link LED that will light up when an active connection is established. Look at the Link LED on both ends of the cable to make sure it is lit up. If it is not lit, the cable may be faulty or the port may not be configured properly.

Step 4: Run a ping test

A ping test is a simple way to test the connection between two devices. To perform a ping test, open the command prompt on the computer (Windows users can press the Windows key + R, type in \"cmd\", and hit enter). In the command prompt, type \"ping [IP address]\" where the IP address is the address of the device you are testing the cable with (e.g. the router or server). If the ping test returns a response, it means the cable is working properly. If there is no response, the cable may be faulty.

Step 5: Use a network diagnostic tool

If you are having trouble identifying the issue, you can use a network diagnostic tool to troubleshoot the connection. Windows users can use the built-in Network Diagnostic tool, which can be accessed by right-clicking on the network connection icon on the taskbar and selecting \"Troubleshoot Problems\".


Testing an Ethernet cable with a computer is a simple process that can ensure a reliable network connection. By following the steps above, you can easily identify any issues with the cable and take appropriate action to fix them.

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