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Customer Ratings & Reviews

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Customer reviews

Rating 4.7 out of 5 stars with 324 reviews

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Rating by feature

  • Connection Quality

    Rating 4.8 out of 5 stars

  • Performance

    Rating 4.8 out of 5 stars

  • Setup

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

94%would recommend to a friend

Customers are saying

Customers express satisfaction with the MB7621 cable modem's ease of use, performance, and setup process, frequently citing positive experiences with installation and speed. Many appreciate its compatibility with various routers and internet service providers, as well as its reasonable price. However, some users reported occasional connection issues and noted the lack of built-in Wi-Fi functionality. A few also mentioned the modem's size and the need for sufficient channels for optimal performance.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 4 Showing 61-80 of 324 reviews
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Works with Comcast Xfinity

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I used this modem with comcast xfinity. The setup was quite simple and everything just worked seamlessly after the setup.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    OK Ray

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Replaced an older modem with this Motorola unit and it works great.Geek Squad installed in no time at all and the performance is much improved.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great Modem, Easy Set-up

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have been using this Modem for about a month. It has worked right out of the box with an easy set-up. I have had some issues with uncorrected channels, but Motorola said it was due to Optimum no longer supporting them. I still use it as the Aris I bought to replace it has yet to work....That is what Optimum pushes. I have to restart the modem when the channels get cluttered with errors, but it still works great. I hope to move to an Optimum free area where I can use this modem,

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Solid and dependable

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Has been working solidly for a while now with no issues.

    I would recommend this to a friend
  • Pros mentioned:
    Setup, Speed

    Rated 5 out of 5 stars

    Not bad.

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I’m not a tech to give specific details about performance but since I’m having it it works fine. Maybe it’s not enough time to tell if its product up to par, I can tell installment was easy even for me. Since then internet delivery was solid and my internet speed increased accordingly. Hope I don’t need to call customer service.

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Rated 4 out of 5 stars

    Fast

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Huge improvement in speed! My previous modem was a Linksys that was good in it’s day but it was time to replace it. What a difference the 24x8 specs make. I have WOW internet 500Mbps package and I’m consistently getting 400+ in my speed tests. Reboots seem faster as well during the few times I needed to do it in the 4 months that I’ve had it.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Works Great with Suddenlink

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Local City Facebook Forum showed Motorola as best choice for reliability and was also confirmed by Installation Tech. Plugged it in; added my (2) existing Apple Routers for 2 story coverage and nothing else to do but surf and stream.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Really Nice Cable Modem

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    No problems hooking this modem up to Comcast. Does an outstanding job streaming video. Nice looking and takes up very little space. No problems to report seems to be everything it says in the description and comes at a very reasonable price.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Performance, Setup

    Rated 5 out of 5 stars

    Easy set up

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Solid unit Works great. Easy set up and no maintenance

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Speed

    Rated 5 out of 5 stars

    This is ag reat modem!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My ISP has a habit of disconnecting frequently at a certain time of day. This modem recovers very nicely and hooks right back up! My previous All-in-one had to be manually reset. All I need now is patience. (about 30 seconds) If DOSAIS 3.0 is all you need, this is the one to get!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Easy, peasey!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a very easy plug and play modem! Directions were complete and very practical. If a 78 year old non techy person could set it up anyone can!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    works great and is really fast

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best value for money and very easy to setup and works without any issues with Comcast internet

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Modem

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great modem and is always better than renting for internet companies.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    great for Comcast/Xfinity

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    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works perfectly with Comcast/Xfinity - no issues at all! Paired with Netgear Nighthawk router

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Works with WOW Internet

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    WOW decided to raise their modem rental fee by 40% from ridiculous to obscene so I decided to try my own. Short story, it works. I plugged it in and thought I wouldn't get Internet access until I called WOW with the MAC address but it surprisingly worked, although at very slow speeds. The speed was normal after I called WOW and they updated their system. I lost access twice in the first few hours and had to restart the modem both times to get it to work again. I was disappointed by this bad start but I haven't had to restart is since and it's been a couple weeks. It's worth a try if you're tired of paying exorbitant fees to the cable company.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Easy set up

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The modem was very easy to set up. It works well with my internet provider.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Easy set-up

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this modem to replace an outdated modem no longer supported by my cable provider. It was easy to set-up (5 minutes). No problems since!

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Rated 5 out of 5 stars

    Good reliable modem

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The modem works as expected. Delivers the 500MB or so speed my provider offers.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Just like the original and more.

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this modem to replace the original from spectrum because there was a shortage of modems and I’m very satisfied with the work and performance with no sweat.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Connects great!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this to avoid rental fees. Works perfectly…..couldn’t be happier.

    I would recommend this to a friend
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