---
product_id: 53556025
title: "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"
brand: "motorola"
price: "€ 151.09"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.nl/products/53556025-motorola-mb7621-cable-modem-pairs-with-any-wifi-router-approved
store_origin: NL
region: Netherlands
---

# Up to 900 Mbps speed Save $156/year on rental fees Compatible with any WiFi router 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

**Brand:** motorola
**Price:** € 151.09
**Availability:** ✅ In Stock

## Summary

> 🚀 Own your speed, own your savings—modem mastery starts here!

## Quick Answers

- **What is this?** 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 by motorola
- **How much does it cost?** € 151.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/53556025-motorola-mb7621-cable-modem-pairs-with-any-wifi-router-approved)

## Best For

- motorola enthusiasts

## Why This Product

- Trusted motorola brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Savings:** Cut monthly rental fees and save an average of $156 annually—own your connection.
- • **Blazing Fast Speeds:** Experience cable Internet up to 900 Mbps—stream, game, and work without lag.
- • **Trusted by the Best:** Approved by Comcast Xfinity, Cox, and Spectrum for hassle-free setup.
- • **Pro-Grade Reliability:** Full-Band Capture Digital Tuner ensures a stable, lightning-fast connection.
- • **Universal Compatibility:** Seamlessly pairs with any WiFi router, giving you total network freedom.

## Overview

The Motorola MB7621 is a DOCSIS 3.0 cable modem designed for cable Internet plans up to 900 Mbps. It features a Full-Band Capture Digital Tuner for enhanced reliability and pairs effortlessly with any WiFi router. Approved by major providers like Comcast Xfinity, Cox, and Spectrum, it offers a cost-effective alternative to rental modems, saving users approximately $156 per year.

## Description

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

## Features

- Model MB7621 is recommended for actual cable Internet service speeds up to 900 Mbps. Wirecutter rates this “the best modem for most people.” A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
- Pairs with any WiFi router - Seamlessly compatible with any WiFi router to connect all your devices. This cable modem does NOT have a built-in wireless router or telephone call capability.
- Cost-saving solution: Owning your own modem typically saves the average home $156 per year in monthly rental charges. (Savings are shown for Comcast Xfinity and vary by cable service provider.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Motorola |
| Item model number | MB7621 |
| Item Weight | 1.12 ounces |
| Product Dimensions | 7.25 x 2.25 x 7.88 inches |
| Item Dimensions  LxWxH | 7.25 x 2.25 x 7.88 inches |
| Color | Black |
| Batteries | 1 9V batteries required. |
| Manufacturer | MTRLC LLC |
| ASIN | B077BL65HS |
| Is Discontinued By Manufacturer | No |
| Date First Available | December 20, 2017 |

## Product Details

- **Brand:** Motorola
- **Internet service provider:** BrightHouse, Charter Spectrum, Comcast Xfinity, Cox, Time Warner Cable
- **Connectivity Technology:** Ethernet
- **Compatible Devices:** Personal Computer
- **Product Dimensions:** 7.25"L x 2.25"W x 7.88"H

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71dcu09F-UL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Do all four Ethernet ports on this modem output the same amount of bandwidth or are there only certain ports that operate at maximum capacity?**
A: The Motorola MB8600 cable modem I received in May of 2022 does not have four ethernet ports, only one.  I'm disappointed as having an extra port is really nice for troubleshooting with a directly connected laptop, bypassing the separate router between the MB8600 and the rest of the network.

**Q: Does this use the now-notorious Intel Puma 6 chipset?**
A: Model MB8600 and all Motorola products use Broadcom chipsets and do not have the problem associated with the Puma 6 chipset.

**Q: I also need wifi, what do you recommend?**
A: The MB8600 modem will work with any WiFi router.  Given the speed of the MB8600, you should be using at least an AC1900 router and given the other devices in your network, you might be able to take advantage of a wireless speed even faster than AC1900.The Ethernet port on the MB8600 simply plugs into the WiFi router of your choice.  The router should be current enough to have a Gigabit WAN port (10/100/1000 Ethernet port), since you will need that  for the speeds that the MB8600 can deliver.  And for now, 1 Gbps service is the fastest cable service Comcast is providing in the US.  When Comcast or other cable Internet  service providers begin providing service speeds over 1Gbps, the MB8600 has the bonded Ethernet ports which will allow the MB8600 to deliver speeds above 1 Gbps.  We are not aware of a consumer-home/small office router that does Ethernet port bonding today, but they are coming.  Ethernet port bonding is available on Enterprise level routers (routers used in large organizations), but we can't recommend that class of product for a consumer at this point.  They are more complicated than you need and more expensive.   Bonded Ethernet ports for consumers will appear by the time Comcast is ready to begin delivering speeds above 1Gbps and the MB8600 will be ready to deliver those speeds.In summary:                 Use at least an AC1900 wireless router                 Be sure the router you choose has a Gigabit Ethernet WAN port.

**Q: What chipset is the mb7621 utilizing?  intel or broadcom or other?**
A: Model MB7621 and all Motorola modems utilize the Broadcom modem chipset.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic at it's job.
*by R***G on April 24, 2025*

Slower connection to Xfinity than shown (15 minutes), but if you're patient this will self-register. I took a different route and attempted to add the MAC address into my list of authorized Xfinity devices through their app, but requires continuious network connectivity, So once you've disconnected your old cable modem (unless you have a splitter), your internet goes down.My experience was just over 30 minutes, but it works perfect. The 4-5 page fold out instructions show different variations of blinking, pulsing, or steady light to indicate status. The modem will restart several times as it binds to your provider, downloads updates, and reboots, but the lights are a very mellow version of status. When it is all the way online and functional, it will be a solid wite light. The light is neither distracting nor obnioxious.I run a TPLink Archer BE800 Wifi 7 Router, and that also took a few minutes to integrate, but the delay was on me having forgotten that one of the 2 10G ports is primary. Once I remembered that I was up instantly.I greatly appreciate the small and blend into the background nature of the modem. So many of the cable modems are a loud color, tall, or Christmas Tree of bright indicator lights.This modem focuses specifically on a connection to your cable provider, and does not address wifi, or providing additional ports. It is perfect for my needs since I have the new TPLink Archer. This for me was a choice with specific intent, as I like function separation, that way if one fails the cost to get back on line is far less expensive. But from the selections currently available I did not see a combo Modem/Router that was DOCSIS 3.1 along with Wifi 7 and 10 G ports.

### ⭐⭐⭐⭐⭐ working well with xfinity
*by K***R on June 12, 2025*

Decided to stop paying for xfinity xb7 rental. Replaced with this and a Gl.i router. Setup and activation to xfinity went smoothly. Wifi performance of this modem with new wifi router is a bit better than the xfinity xb7. Temporarily wiring a laptop thru ethernet I got much higher speeds than I got thru the XB7. Bonus was when I returned the xb7 to the xfinity store they were able to apply a 1 year promotional plan to further reduce the monthly cost. @ about $50 less a month now, the cost of this modem and the Gl.i router will be paid off in less than 6 months.

### ⭐⭐⭐⭐⭐ When you are done messing with Spectrums garbage buy this.
*by T***D on May 13, 2025*

So unless you are granted the best Spectrum modem you are going to have issues with packet loss and will strangely need to replace the modem in 9 months to a year. Save yourself the aggravation and just get one of these. I had the 3.0 model for 7 years without an issue and now that Spectrum is going 3.1 I first got a free Spectrum modem proceeded by 2 swaps in a 2 month period. The issue was packet loss from time to time that would cause issues when I worked and gamed from home. So I was tired of free and purchased the Motorola 3.1 and not really shocked. My network has been stable ever since. Save yourself the troubles and just buy one of these already and be stress free. All you have to do is login to Spectrum's website. Get technical support, tell them the make, model and MAC of the unit and they will add the new MAC and delete the old MAC, give it about 15 minutes and you will be back online. Will take you 20 minutes from the 5 minute conversation with Spectrum to the Modem setting itself up. It's really that easy.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-24*