Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and Spectrum | for Cable Plans Up to 900 Mbps | DOCSIS 3.0

About this item
Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this the best modem for most people. A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
This cable modem's 1 Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with Whole Home WiFi or Mesh networks like eero, Google WiFi, and Orbi. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7315, MG7540, MG7550, and MG7700 have a built-in wireless router. )
Requires cable Internet service. Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and other cable service providers. Eliminate cable modem rental fees up to 156 dollars per year. (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, AT&T, CenturyLink, Frontier, and others. Model MB7621 has no phone jack. )
Setup is fast and easy using the quick start guide.
Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A 2-year warranty plus rugged lightning and power surge circuits protect your investment.


The smart choice for your cable Internet service
Eliminate monthly cable modem rental fees Typically saves 168 dollars per year in Xfinity cable modem rental fees. Actual savings depend on your service provider.

800+ 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 MB7621s Ethernet port isnt 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.

MB7621 Fast Easy Set Up Image

Fast Internet Speed
Connects fast with just 3 connections - power, coax cable, and Ethernet.

MB7621 supports cable plans up to 900 Mbps

Supports internet plans with speeds up to 900 Mbps
For other service providers, supported service speeds are similar to Comcast.