Quick Start Guide
Table Of Contents
- 24x8 Cable Modem
- Model MB7621
- Most users will connect a WiFi router to the MB7621. A wireless router lets multiple devices (computers, smartphones, tablets, video devices, game stations…) share your cable modem’s Internet connection, either wirelessly or through a direct Ethernet ...
- 1. The cable modem and the router should both be powered off.
- 2. Plug one end of the cable modem’s Ethernet cable into the Ethernet jack of your modem, and plug the other end of the cable into the router’s WAN port. (You may need to disconnect the cable from your computer first.)
- 3. Power-up the cable modem. Wait for the ONLINE light (/) to be solidly lit.
- 4. Power-up the router. Wait for the router to complete its power-up sequence.
- 5. The LAN light / on your modem should be lit to show the Ethernet connection to your router.
- 6. Follow your router’s instructions for setting up the router and connected devices.
- If you haven’t already activated your Internet service, do that now. (See Prepare to Activate on page 5.) Using a computer or other device connected to the router, try connecting to the Internet. If it works, Congratulations! Installation is complete.
- Troubleshooting Tips
- We like to help.
6
For Comcast XFINITY Users Only:
If the activation page does not appear, please go to
xfinity.com/activate for more information and to activate
your modem.
Here is a list of phone numbers for some major cable
service providers. (Note that this list is subject to
change.)
Comcast
1 (800) XFINITY
Cox
1 (877) 206-4210
Bright House (Spectrum)
1 (855) 222-0102
Cable One
1 (855) 692-4113
Charter Spectrum
1 (855) 757
-7328
MediaCom
RCN
1 (844) 987
-3260
1 (800) 746-4726
Suddenlink
1 (877) 794-2724
Time Warner (Spectrum)
WOW!
1 (855)
707-7328
1 (800) 343-2076
Once your MB7621 is activated either online or by
phone, your service provider will provision your
MB7621 service. Typically this takes less than 5
minutes, but in some cases this may take 30 minutes
or longer to complete.
Once you have activated, you should have Internet access for
whatever’s plugged into your cable modem. Congratulations!
If your cable modem is NOT working, see Troubleshooting
Tips below.
Note: You can connect this device to a WiFi
router, computer, HDTV, game station, or other
Ethernet-capable device. This product does not
include a router, WiFi, or telephone capability.