Using the Ethernet LAN lights to troubleshoot the Actiontec RI408 router An Ethernet light should be illuminated for each port (1-4) where you have an Ethernet cable connected. If you have an Ethernet cable plugged into a port that does not have its light illuminated, follow the steps below to diagnose the problem.
- Plug the yellow Ethernet cable into a different available Ethernet port in the back of the router.
- If the Ethernet light is still off, verify that you plugged the other end of the Ethernet cable securely into the Network Interface Card (NIC) in your computer.
[Show Me] - If the Ethernet light is still off, use Windows Device Manager to verify that your NIC is working correctly.
- If the Ethernet light is now illuminated but you still can't connect to the Internet, continue with Troubleshooting Step 5.
- If the Ethernet light remains off, contact Verizon technical support.


