If you re using a v cables instead plug each cable into the same colored port on the back of the box e g plug the yellow cable into the yellow input.
Xfinity cable modem setup.
Learn more about how to install your xfinity self install kit devices.
It goes in the wide narrow port in the back of the cable box.
Learn how to activate your xfinity internet service.
You ll receive an xfi gateway or xfi advanced gateway depending on your location and plan needs.
Learn more about how to install your xfinity self install kit devices.
Using approved third party equipment for xfinity internet and xfinity voice find out if you re using an xfinity approved modem.
Learn how to self install xfinity internet.
On most comcast cable boxes the hdmi port is either in the bottom right corner of the box or at the bottom of the box s back.
When asked provide your account information and provide your cable modem or modem router s model number and mac address which are on the product label.
Learn how to self install xfinity internet.
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If you are unable to activate your cable modem or modem router using the self activation process call comcast xfinity customer service at 1 800 xfinity 1 800 934 6484 and do the following.
Learn about installing and activating equipment and services in your xfinity self install kit.
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An xfinity internet modem wifi router in one designed to deliver enhanced coverage and the benefits of xfi our best wifi experience.
Rent yours at checkout.
How to activate your xfinity internet service.
Learn how to activate your xfinity internet service.
Learn more about how to install your xfinity self install kit devices.
View the entire list of approved modems.
Self install kit installation overview videos and guides.
Comcast is one of the nation s leading providers of cable internet service.
How to self install xfinity internet for an xfi gateway overview video.