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Activate Your Internet Service
Before you start the self-activation process, collect the following
information:
•
Your Internet service provider (ISP) account information
•
Cable modem model number, which is CM400
•
Cable modem serial number
•
Cable modem MAC address
Your cable modem's serial number and MAC address are on the cable
modem label. The following table lists contact information for ISPs that
support your cable modem.
Cable Internet
Contact Information
Provider
CableOne
http://www.cableone.net/
1-877-MY-CABLE (1-877-692-2253)
Cox
https://www.cox.com/activate
1-888-556-1193
Mediacom
https://maestro.mediacomcc.com/walledgarden/page/login.jsp
1-855-Mediacom (1-855-633-4226)
Optimum
https://install.optimum.com/JointInstall/
1-877-810-6750
Spectrum
https://activate.spectrum.net/
1-(833) 267-6094
Xfinity
https://register.xfinity.com/
https://www.xfinity.com/support/internet/activate-
purchased-modem/
1-800-XFINITY (1-800-934-6489)
February 2018
Note:
Your ISP's contact information might change. You can also find the
contact information in your monthly Internet service billing statement.
¾ To activate your Internet service:
1. Visit your ISP's website and follow the onscreen instructions to activate
your Internet service.
2. To determine the accurate Internet speed, visit your ISP's speed test
website or and perform a speed test.
Connect a Router
After you install the cable modem and activate your Internet service, you
can disconnect the computer and connect a router to the cable modem.
¾ To connect a router to the cable modem:
1. Reboot the cable modem by unplugging the power cable from the
cable modem and plugging it back in.
Wait for the Online LED
2. Use an Ethernet cable to connect the Ethernet port on the
cable modem to the WAN or Internet port on the router.
3. Power on the router.
4. Wait until the router is ready.
5. Connect a computer to the router.
Cable modem
For more information about how to set up your router, see the
documentation that came with your router.
NETGEAR, Inc.
350 East Plumeria Drive
San Jose, CA 95134, USA
to stop blinking and light solid green.
Computer
Router
Support
Thank you for purchasing this NETGEAR product. You can visit
www.netgear.com/support
to register your product, get help, access the latest
downloads and user manuals, and join our community. We recommend that you
use only official NETGEAR support resources.
If you are experiencing trouble installing your cable modem, contact NETGEAR
at 1-866-874-8924. If you are experiencing trouble connecting your router,
contact the router manufacturer.
For regulatory compliance information, visit
http://www.netgear.com/about/regulatory/.
See the regulatory compliance document before connecting the power supply.
Customer-owned cable modems might not be compatible with certain
cable networks. Check with your cable Internet provider to confirm that this
NETGEAR cable modem is allowed on your cable network.
© NETGEAR, Inc., NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc. Any non-NETGEAR
trademarks are used for reference purposes only.
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