The WAN port may be a different color from the other Ethernet ports on the back of your router.
Plug the other end of the Ethernet cable into the modem.
How Do I Connect to My Wi-Fi Router?
RF Coaxial Cable - Screw-on Type.
How Do I Connect My New Router to the Internet?
If that doesn’t work, you shouldtroubleshoot your Wi-Fi internet.
When decidingwhere to put your router, choose an open area with as few obstructions as possible.

The yellow port indicates it’s the WAN port.
To increase the range of your data pipe, invest in a Wi-Fi extender.
Can You Connect a Router to a Modem-Router?
You may want to add an external router if you desire advanced security features.
At a minimum, you shouldchange the default Wi-Fi passwordto decrease the likelihood of hackers infiltrating your data pipe.
If you or another person changed the default user name and password, reset your router to factory tweaks.
You canconnect two routers wirelessly, but the second router will only function as a wireless access point.
To use the internet, you need a modem and aninternet service provider (ISP).
Possiblereasons why your modem isn’t workinginclude loose coax connections, damaged Ethernet cables, and outdated firmware.
If you’re able to’t connect to Wi-Fi, there’s probably an issue with your router.