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Customer reviews

Rating 4.7 out of 5 stars with 324 reviews

Rating Filter

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 13 Showing 241-260 of 324 reviews
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Modem

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

    I'm very happy with the modems performance so far. Every thing seems to be working as expected.

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

    Rated 5 out of 5 stars

    Motorola Modem

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

    Works well, good price for basic internet needs...

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    The modem was faulty

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

    From the minute I hooked it up there was a problem. I called mediacom thinking it was a cable issue because of a storm the acknowledged there was a problem after it was fixed the modem still didn't perform. A tech came to the house and ran a full diagnostics. The modem was recieving 280 mbps with a signal noise of +4, the modem was only putting out 74 mbps with a signal noise of -17. I called best buy and they blew me off saying it was past the return date of 14 days. I am returning the modem to Motorola who will send me a replacement but I will never buy anything from Best Buy again. If Best buy can't improve their consumer support without having to pay for a stupid membership then I will do business with Amazon

    No, I would not recommend this to a friend
  • Pros mentioned:
    Speed

    Rated 5 out of 5 stars

    Amazing!

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

    Makes internet faster than what I paid for, 10/10 will buy again!

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

    Rated 5 out of 5 stars

    Reliable

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

    Reliable, consistently good in quality or performance; able to be trusted.

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

    Rated 5 out of 5 stars

    Great Modem

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Rock Solid Performance. Now I can receive the full speed offered by my ISP.

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

    Rated 5 out of 5 stars

    Works as xfinity modem

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

    The product is great and compatible with Xfinity equipment requirements.

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

    Rated 5 out of 5 stars

    Great deal

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

    Works exactly as expected. Great internet speed, way cheaper than renting from ISP.

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

    Rated 4 out of 5 stars

    Motorola DOCSIS 3 Cable modem

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

    I've been using this modem for about a month without any issues. I was previously using a 2009 DOCSIS 2 modem, which worked fine until I replaced it.

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

    Rated 5 out of 5 stars

    Easy & Works

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

    Extremely easy to set up and just works as expected.

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

    Rated 5 out of 5 stars

    It’s a cable modem. It works.

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

    Works as advertised, exceeds Comcast 600MBps plans we are on.

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

    Rated 5 out of 5 stars

    Motorola modem

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

    Works great was easy to hook up. Highly recommend.

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

    Rated 5 out of 5 stars

    Xfinity modem

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

    Delivers full speed that I pay for with Xfinity, even a little more.

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

    Rated 5 out of 5 stars

    Great product

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

    Great product. The setup with Xfinity was easy and performance is very good.

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

    Rated 5 out of 5 stars

    A very good cable modem.

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

    This has been (so far) an excellent piece of equipment.

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

    Rated 5 out of 5 stars

    Easy install good price

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

    Very nice easy to install. Ice looking n model n good

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

    Rated 5 out of 5 stars

    From Neat Wall TV

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

    Works well and supports Spectrum Cable Services very easily.

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

    Rated 5 out of 5 stars

    Great Modem

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

    Excellent Modem. I am using this from last 2 years and so far no issues.

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

    Rated 4 out of 5 stars

    Worth the upgrade

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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 replace an older Motorola modem. Works well on my Comcast plan. Was easy to set up and have not had any issues with using it.

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

    Rated 5 out of 5 stars

    Good product

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great speed and very stable connections after I upgraded to this modem

    I would recommend this to a friend