To use Ethernet instead of wifi, plug one end of an Ethernet cable into your device's Ethernet port (or adapter) and the other end into an available port on your router or modem. In most cases, your device will automatically detect and connect to the internet via Ethernet once the cable is plugged in, giving you a faster and more stable connection.
What you need to use Ethernet instead of wifi
Before you start, gather these items:
- A device with an Ethernet port (RJ-45 connector). Most desktop computers and many laptops have one built-in.
- If your device lacks an Ethernet port, you will need a USB-to-Ethernet or Thunderbolt-to-Ethernet adapter.
- An Ethernet cable (for example, Cat5e, Cat6, or Cat6a).
- A router, switch, hub, or modem with an available Ethernet port.
How to connect your computer with an Ethernet port
- Locate the Ethernet port on your computer. It looks like a slightly wider phone jack, often labeled with an icon of three connected squares.
- Take one end of the Ethernet cable and insert it firmly into the computer's port until you hear a click.
- Plug the other end of the cable into any available Ethernet port on your router or modem.
- Check the LED lights on the port. A solid green or amber light typically indicates a successful connection.
- Open a web browser or internet-dependent application. If you can load a webpage, your wired connection is working.
How to connect a device without an Ethernet port
Many modern laptops, including most Chromebooks, do not have built-in Ethernet ports. To connect them, you need an adapter.
- Plug a USB-to-Ethernet or Thunderbolt-to-Ethernet adapter into an available USB or Thunderbolt port on your device.
- Connect one end of the Ethernet cable into the adapter.
- Connect the other end of the cable into an available Ethernet port on your router or modem.
- Your device will usually automatically detect and configure the wired connection. Chromebooks will automatically detect the adapter and will always use the wired connection when available.
Troubleshooting common Ethernet connection issues
If your wired connection isn't working, try these fixes:
Check the link light
Look at the small LED near your device's Ethernet port or adapter. If the light is off or blinking, the physical connection may be loose or faulty. Reseat the cable at both ends.
Reseat the cable
Sometimes you need to unplug the Ethernet cable and plug it back in firmly to ensure a solid connection. If you need to unplug Ethernet cable for any reason, always pull on the connector, not the cable itself, to avoid damage.
Restart your modem and router
If there is no internet access despite a solid link light, power off your modem and router, wait 30 seconds, then power them back on. Wait for all lights to stabilize, then test your connection again.
Check the cable category
If you experience slow speeds, consider the difference between Cat6 and Cat8 Ethernet cable. Cat6 supports speeds up to 10 Gbps, while Cat8 is designed for data centers and supports higher frequencies. For most home users, Cat6 or Cat6a is sufficient and more flexible than Cat8.
Test with another device or cable
If problems persist, try a different Ethernet cable or connect a different device to the same port. This helps identify whether the issue is with the cable, the device, or the router.
