We may receive a commission on purchases made from links. When you first sign up for internet service with one of the major providers like Xfinity, they'll usually offer to rent out a hybrid modem ...

Model MB7621 is recommended for ... (Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon ...

Comcast had originally implemented the policy because it wanted to make sure that modems customers used were compatible with its 105Mbps service, which at the time was one of the fastest offered ...