Use the Ethernet cable provided in the package to connect the Gigabit Ethernet port on the modem router to an Ethernet port on the computer.Turn off the computer to which you intend to connect the modem router.Make sure that the cable is tightly connected. Use the coaxial cable that your cable company provided to connect the cable port on the modem router to a cable wall outlet. To connect your modem router to a computer: Call Comcast XFINITY to activate Internet service and register voice telephone lines.Connect your modem router to a computer.To install and activate your modem router follow these high-level steps: Your modem router’s serial number and MAC address are on the modem router label. Note: Before you connect your modem router and contact your cable Internet provider, collect your XFINTY account number, the phone number associated with your XFINITY account, XFINITY login information (your email address or user name and password), modem router model number (which is CM1000), modem router serial number, and modem router MAC address. During the installation and activation, you must connect the modem router directly to a computer. The modem router provides a connection between your cable Internet provider’s network and your computer, router, or WiFi router.
