Learn how the Digital Migration affects a media center PC that is used with Comcast Cable service
Here's what you need to know
A set-top box or digital adapter will be required in order for a media center PC to receive Comcast's Expanded Basic channels or a higher level of service. The installation is the same as the installation for a set-top box or digital adapter on an analog television.
Note: Media center PCs that use a cable card do not require a digital adapter.