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Customer Ratings & Reviews

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Customer reviews

Rating 4.4 out of 5 stars with 839 reviews

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Rating by feature

  • Connection Quality

    Rating 4.4 out of 5 stars

  • Performance

    Rating 4.4 out of 5 stars

  • Setup

    Rating 4.6 out of 5 stars

Pros mentioned filter

Cons mentioned filter

85%would recommend to a friend

Customers are saying

Customers have good things to say about the MB8611 32x8 DOCSIS 3.1 Cable Modem's ease of use, performance, and setup process. Many appreciate its 2.5 GB Ethernet port and consider it a good value. However, some customers reported issues with connection stability and signal drops. The modem's compatibility with various internet service providers is also noted.

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 33 Showing 641-660 of 839 reviews
  • Rated 5 out of 5 stars

    Performs as expected

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

    I have been very satisfied with the performance of this modem and after a quick registration call with Comcast the modem was a breeze to setup. I am able to get full download speed and IPv6 didn't require any modem configuration. My UDM Pro (Ubiquiti) works well and typically goes weeks or months without needing a reboot.

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

    Rated 5 out of 5 stars

    Excellent choice

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

    Capable of handling the speeds I subscribe to. Works with no issues

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

    Rated 5 out of 5 stars

    Winner!

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

    Excellent speed increase over arris model and stays cool to touch

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

    Rated 5 out of 5 stars

    Tired of weekly outages - get this!

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

    This eliminated all the issues with Spectrums modem!

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

    Compatibility with XFinity is... spotty

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

    This modem is prone to constant drops in service and reboots. I write this review as I once again await for a Comcast technician to come to my house. Search online and you will see this issue is not as uncommon as it should be. When it works, it's great, but when it doesn't... well, lets just say it rebooted 3 times while typing this.

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

    Rated 5 out of 5 stars

    Fast Modem

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

    Excellent modem, great speeds. I would recommend.

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

    Rated 5 out of 5 stars

    Xfinity capable modem

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

    Noticed an improvement from old modem. Works well with Xfinity

    I would recommend this to a friend
  • Cons mentioned:
    Connection

    Rated 2 out of 5 stars

    It keeps dropping signal as of late.

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

    Issue, it just loses all connection randomly. It may just disconnect for 1-7 minutes. It's not the end of the world but if I'm gaming or doing something that requires constant internet/ wifi it is super annoying. It's not my router, it's the modem because my hardwired device in the modem just lose connection. I reset it, contacted Comcast, updated, everything. Not sure how to fix the issue.

    No, I would not recommend this to a friend
  • Cons mentioned:
    Connection

    Rated 1 out of 5 stars

    Constantly dropping connection on xfinity.

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

    Upgraded to Comcast gigabit service and purchased this modem since it was listed as compatible with Xfinity’s 1.2 gigabit service. I would lose service multiple times a day which impacted my ability to work from home. When the modem had a connection My connection never reached above 500mbs even with a 1.3 gigabit router. Returned modem and bought a different brand as a replacement. Problem solved no disconnects and reaching the download speeds on my xfinity plan.

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

    Rated 5 out of 5 stars

    Good investment

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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.

    Love it! Works perfect. Nice upgrade to my home! 2 thumbs up.

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

    Rated 5 out of 5 stars

    Nice Modem

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

    Easy and simple set-up right out of the box. Works great!

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

    Rated 5 out of 5 stars

    Excellent docsis 3.1 cable modem

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

    Super fast, very secured connection, setup is very easy…

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

    Rated 5 out of 5 stars

    Nice upgrade

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

    So far so good. Speed increased after upgrade which is good.

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

    Not sure it's worth it yet, for me

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

    Bought this and an expensive AX gaming router to replace a Netgear Nighthawk AC1900 for my gig service. I was averaging around 200mbs on wifi and now its about 250 throughout the house. Not worth the upgrade so far but I'm sure it'll pay off in the long run. No real regrets yet

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

    Rated 5 out of 5 stars

    Great modem

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

    Great device. Really pumped up my network. Easy to set up.

    I would recommend this to a friend
  • Cons mentioned:
    Connection

    Rated 3 out of 5 stars

    Good but

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

    Its awesome but notice that it disconnects my internet too much, called my internet service and they said they was no issue so am guessing its a defective modem

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

    Rated 5 out of 5 stars

    If you need a replacement for a Comcast modem

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

    Works as described. Finally stop renting the Comcast modem

    I would recommend this to a friend
  • 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.

    This Motorola modem is the best modem I have used.

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

    Rated 5 out of 5 stars

    Great

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

    Works great with my Xfinity service. Lightning-fast.

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

    The one to buy.

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

    Best value for the money. This modem can handle it.

    I would recommend this to a friend