Comcast Internet Self-Install Instructions

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It takes only a few cable connections to get your Internet started.

Comcast offers Internet customers free installation with the Comcast self-installation kit. Everything you need to set up your Internet service is included in the kit, including cables, modem, install CD and a cable splitter, if you have cable service. Having a technician come out to install the Internet service costs a service fee. Doing it yourself saves you money.


Step 1

Open the box and check that all included parts match Comcast's list of things required to install your modem.

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Step 2

Attach the first coaxial cable included in the Comcast self-installation kit to the cable splitter with two prongs. Screw the other end to the modem provided by Comcast.

Step 3

Unscrew the coaxial cable from the cable-receiver box that also attaches to the wall. Screw that coaxial cable, now running from just the wall, and attach it to the splitter with a single prong.


Step 4

Screw the third coaxial to the cable box and attach it to the last open prong on the splitter, which is the side with two prongs.

Step 5

Insert the Ethernet cable into the Ethernet port of your computer and plug it into the Comcast modem or wireless router.


Step 6

Plug the Comcast modem into the electrical socket to turn it on and then turn on your computer.

Step 7

Open the Comcast Internet self-install CD and place it into your CD-ROM drive. Your computer will begin the self-install process, which requires only clicking "Install."


Step 8

Contact Comcast by phone when the installation on your computer is complete. Comcast customer service will activate your Internet service, which will then be ready to use.

Things You'll Need

  • Comcast Internet self-installation kit

  • Wireless router (optional)


Call Comcast for help if the install does not work or produces errors. Customer service can troubleshoot your service.



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