Home / Collections / All Products / Motorola DOCSIS 3.0 24x8 Cable Modem, up to 830 Mbps speed | mb7621

mb7621 | 830Mbps DOCSIS 3.0 Cable Modem

"Didn’t realize how much my old modem was reducing my bandwidth until I installed this modem. Totally worth it." –Jeff

mb7621 | 830Mbps DOCSIS 3.0 Cable Modem

$59.98 $89.99 saving $30.01
| /
  • Compatible with Xfinity, Cox, Spectrum & more
  • Save up to $168* per year vs renting
  • 2 year warranty, Unlimited Support
$59.98 $89.99 saving $30.01
| /

"Didn’t realize how much my old modem was reducing my bandwidth until I installed this modem. Totally worth it." –Jeff

  • Description
  • Tech Specs
  • high-speed DOCSIS 3.0 performance

    Compatible with major U.S. cable Internet providers including Comcast Xfinity, Cox, Spectrum and others.

    fast, reliable Internet

    Supports cable Internet service plans with speeds up to 600 Mbps for faster downloads, HD streaming, and better gaming.

    works with any router

    Seamlessly pair with any WiFi router to connect all your wireless devices. This cable modem does not have a built-in wireless router or telephone capability.

    extreme cost savings

    Save up to $168 per year on modem rental fees with your Internet provider.

    simple setup and use

    Easy self-installation. Comes with a 2-year warranty and free support from our team of US-based technicians.

    motosync app

    It's like having our product experts in your home with one tap using in-app live chat support.

  • GENERAL

    Cable Modem Service Interface

    • F-type female 75 Ω (standard coaxial connector)

    Ethernet LAN Interface

    • RJ-45 10/100/1000 Mbps Ethernet, with Auto-MDI/MDIX

    Status Indicators

    • Front panel:
      Power, Downstream, Upstream, Online, LAN

    Dimensions

    • 2 1⁄4" wide x 7 1⁄4" deep x 7 7⁄8" tall
      (57 mm x 184 mm x 200 mm)

    Weight

    • 16.3 ounces (462 grams)

    Power Adapter

    • DoE-compliant Level VI energy-saving, UL-listed power adapter with 12 Volt DC, 1.5 Amp output and 100-240VAC universal input
    • NEMA 1-15 (North American style) 2-prong plug is provided in the US.

    Operating Temperature

    • 32° to 104° F (0° to 40° C)

    Certifications

    • FCC 15B, Bureau Veritas 60950-1 ITE safety, CableLabs®, cable service providers

    Surge Protection

    • Ruggedized cable and power lightning protection

    Warranty

    • Two years

    Operating Parameters

    DOCSIS Standards

    • DOCSIS 3.0, 2.0, 1.1

    Downstream

    • Data Rate*:
      Up to 1029 Mbps*
    • Bonded Channels:
      Up to 24 SCQAM
    • Frequency Range:
      108 to 1002 MHz
    • Modulation:
      64 or 256 QAM
    • Operating Level Range:
      -15 to +15 dBmV

    Upstream

    • Data Rate*:
      Up to 246 Mbps*
    • Bonded Channels:
      Up to 8 SCQAM
    • Frequency Range:
      5 to 42 MHz
    • Modulation:
      QPSK, 8QAM, 16QAM, 32QAM, 64QAM,128QAM,256QAM
    • Operating Level Range:
      +65 dBmV (64 QAM, single channel)
      +57 dBmV (64QAM, 4-8 channels)
      +65 dBmV (16 QAM, single channel)

    Network Protocols

    • IPv4, IPv6, TCP, UDP, ARP, ICMP, DHCP, FTP, TFTP, SNMP, HTTP

    Application Protocol

    • SNMP v1/v2/v3

    DHCP Client

    • Automatically retrieves IP and DNS server address from DHCP server through WAN connection

    Management

    • Web-based management interface utility

    System Requirements

    • The cable modem must be connected to a cable modem service that uses any of the DOCSIS standards – 3.0, 2.0, 1.1

    Package Contents

    • Cable Modem
    • Power Cube (UL listed)
    • Ethernet Cable (Cat 5e)
    • Velcro® Cable Tie
    • Coax Connection Tool
    • Quick Start Flyer

    * 1029/246 Mbps is the maximum nominal download/upload speed for 24x8 DOCSIS 3.0 cable modems. Actual speeds depend on a number of factors including the speed of your cable modem service, and will typically be slower. Speeds cannot exceed the speed of the Gigabit Ethernet port.

Customer Reviews

Based on 53 reviews
91%
(48)
4%
(2)
6%
(3)
0%
(0)
0%
(0)
S
Scott K.
above expectations

My entire experience was seamless, from the initial communication through installation. The internet speed doubled when I wasn't expecting any increase.

T
Tom O.
great modem

motorola replaced my old cable modem which had an expiring certificate. the new mb7621 works great!

C
Charles J.C.
MB7621 used with Comcast-Xfinity

No problems getting it activated with Comcast and it worked fine with my laptop plugged into it, but my older Netgear WNDR3400v3 wireless router couldn't obtain an IP address from Comcast's DHCP for some reason. I had to get them to re-activate my old MB7420 to get my home network working again. Later I discovered a feature in the Netgear router where I can spoof my computer/laptop's mac-address to see if that fixes the problem (might be a lease-reservation issue). I will re-visit this at a later date when I have more time available.

G
Gordon D.

Motorola DOCSIS 3.0 24x8 Cable Modem, up to 830 Mbps speed | mb7621

R
Ronald S.
Wors

Works as specified without problem.