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Connecting a Router and a Modem With an Ethernet Cable


You need the following items to connect a modem and router to your computer using an Ethernet cable.

Before installing your new modem, you first need to disconnect your old modem from your cable wall outlet and computer.


Connect one end of the coaxial cable to the cable wall outlet, then connect the other to the modem.


Connect the modem power cord to an electrical outlet, then connect the other end to the modem.


Connect one end of an Ethernet cable to the back of the modem and the other end to the router's Wide Area Network (WAN) port.


Connect the router power cord to an electrical outlet, then connect the other end to the router.


Connect the second Ethernet cable to port 1 on the router and the other end to the back of the computer.


Check the modem and router lights to confirm power, and connect to the network and your computer.

  • Refer to the manufacturer's user guides or support websites to learn more about which lights should be on for your specific devices.
  • You may subscribe to Cox Complete Care or Cox Business Complete Care for additional support.
New MyAccount

Cox Business MyAccount Updates

With the new and improved MyAccount portal from Cox Business, you’re in control. Included with your Cox Business services, it’s all right at your fingertips anytime, anywhere. 


  • Perform a health check on your services and reset your equipment
  • Easily configure key features and settings like voicemail and call forwarding
  • View your balance and schedule payments

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