Motorola MB7621 Product Details & Review

The Motorola MB7621 is the #4 best-selling cable modem on Amazon as of September 2021. With the MB7621 you can…

  • Save $120 or more a year on your cable bill
    • At $78, it pays for itself in 8 months
  • Connect to the Internet with a 600 Mbps, or lower, speed tier
  • Replace your leased Cox, XFINITY, Spectrum, or Sparklight modem
    • Also compatible with many other cable providers – See full list below
  • Share Internet across your home with a separate router

Motorola MB7621 XFINITY Modem At a Glance

Top Speed600 Mbps
DOCSIS3.0
Channel Bonding24×8
WiFiNo
VoiceNo
ChipsetBroadcom
Where To BuyAMAZON
UPC0855631006347
Release Date12-20-2017
Motorola MB7621 Quick Specs

The Motorola MB7621 is a DOCSIS 3.0 cable modem with 24×8 channel bonding. This means that this modem is for speed tiers up to 600 Mbps.

Plugs easily into any router for shared high-speed Internet access by all your WiFi or Ethernet-capable devices. Ethernet port can instead provide a high-speed connection to a computer, HDTV, game station, or other Ethernet devices.

Note: This cable modem does not have a built-in wireless router and does not have telephone jacks for support of voice phone calls.

Motorola MB7621 ISP Compatibility

MB7621 Modem Review For Comcast XFINITY

We tested the MB7621 on our XFINITY Internet speed up to 200 Mbps. Not surprisingly, the MB7621 performed well. It was very easy to activate. We ran this modem for 30 days, straight and had no issues at all. Very nice modem to use with Comcast.

Motorola MB7621 ISP Compatibility List

  • Atlantic Broadband – ABB Modems
  • Comcast XFINITY – XFINITY Modems
  • COX – Cox Modems
  • Grande Communications
  • Mediacom
  • Midcontinent Communications
  • Sparklight / Cable One
  • Spectrum (BHN, Charter, TWC)
  • Wave Broadband
  • WoW! – WideOpenWest
  • Zito Media
Motorola MB7621 Back Panel

MB7621 Manuals and Guides