Xfinity will let you rent a modem when you sign up for its Internet service, but you do have the option of using a third-party modem instead. Here's how.

How Much Does Xfinity Home Internet Cost? Xfinity internet plans start at $40 per month for 300 Mbps and speeds go up to 2 ...

The cost of a Comcast-compatible modem, like our top pick, the Arris Surfboard, is more than offset by improved performance and pays for itself in just a few months.

The following shopping guide to Comcast modems provides information on how to choose a compatible model and runs down must-have built-in features like DOCSIS 3.0 and 3.1 and other crucial details ...

The cost of a Comcast-compatible modem, like our top pick, the Arris Surfboard, is more than offset by improved performance and pays for itself in just a few months.

However, one viewer, who recently signed up with the provider, claimed that Xfinity still attempted to upcharge them. “I just signed up for xfinity and they offered the modem for free.

Comcast has largely converted its U.S. network to its high-speed Xfinity service, which relies on DOCSIS 3.0 and 3.1 technology to deliver internet data at speeds up to (and in some places ...