: If your current Xfinity DVR is full, you can buy a compatible external hard drive (up to 2TB for Motorola models or 1TB for Cisco models) and connect it via the eSATA port to expand storage. Alternatives to Renting a Box
: Buying a used Xfinity-branded box from sites like eBay or Amazon is highly discouraged. These are typically unreturned leased equipment and will be flagged as "lost or stolen" in Xfinity’s system, making them impossible to activate. can you buy a dvr for comcast
While you cannot technically "buy" a standard Comcast Xfinity DVR to own, you have options for using your own equipment or upgrading your existing service. Can You Buy Your Own DVR? : If your current Xfinity DVR is full,