Installation Guide

Quick Start
High Speed Cable Modem
Model CM600
1. Collect your cable Internet provider
information.
Collect your cable account number, account
phone number, and login information (your
email address or user name and password).
2. Turn o existing modems and routers.
If you are replacing a modem that is currently
connected in your home, unplug the modem
and plug the new cable modem into the same
outlet.
3. Connect a coaxial cable.
Use a coaxial cable that is provided by your
cable company to connect the cable port on
the cable modem to a cable wall outlet or a line
splitter.
Make sure that the cable is tightly connected.
Note: If Comcast Xfinity is your cable Internet
provider, Xfinity recommends connecting your
cable modem directly to a cable wall outlet.
4. Connect the power adapter.
Connect the power adapter to the
cable modem and plug the power adapter into
an electrical outlet.
Package Contents
Coaxial cable
(not included)
Power adapter
Cable modem
Ethernet cable
Cable wall outlet
Computer
7. Activate your Internet service.
For information about how to activate your
Internet service, see Activate Your Internet
Service.
Note: Aer you install and activate the
cable modem, you can disconnect the computer
and connect a router to the cable modem. For
more information, see Connect a Router.
Cable modem
Ethernet cable
Power adapter
5. Wait for the Online LED to light green.
This process might take up to 10 minutes.
Note: When the Online LED lights, your
cable modem is not connected to the Internet
yet. You must activate your cable modem with
your Internet service provider.
6. Connect a computer to the cable modem.
Use an Ethernet cable to connect a computer to
the Ethernet port on the cable modem.
Reboot the computer.