The smart choice for your cable Internet service
Eliminate monthly cable modem rental fees – Typically saves 156 dollars per year in Xfinity cable modem rental fees. Actual savings depend on your service provider.
600+ Mbps – Maximum actual Internet download speed
GigE Ethernet port – For a high-speed wired connection to any router, computer, or other Internet-capable device.
Connect any WiFi router you choose
Plugs easily into any router for shared Internet access by all your WiFi and Ethernet-capable devices. This flexible approach lets you pair this cable modem with any router you choose for your WiFi needs, including a mesh router or gaming router.
If the MB7621’s Ethernet port isn’t used for a router, it can plug into a computer, HDTV, game station, or other Ethernet device.
Compatible with Most Cable Providers
Certified by Comcast Xfinity, Cox, Charter Spectrum, and other cable providers.*†
* Not compatible with Verizon, AT&T, CenturyLink, and other fiber optic, satellite, or DSL services.
† This cable modem does not have telephone jacks for the support of voice calls.
Fast Internet Speed
For other service providers, supported service speeds are similar to Comcast.
Connects fast with just 3 connections – power, coax cable, and Ethernet.