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Motorola - MB8611 32x8 DOCSIS 3.1 Cable Modem 2.5 GB Ethernet - Black

Model:MB8611
SKU:6451964
Your price for this item is $104.99
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This Product
 
Internet Service Provider (ISP) Compatibility
XFINITY from Comcast, Cox Communications, Charter Communications, Spectrum
Cox Communications, Spectrum, XFINITY from Comcast, Most cable providers
Cox Communications, Spectrum, XFINITY from Comcast, Most cable providers
Cox Communications, Spectrum, XFINITY from Comcast, Most cable providers
DOCSIS Certification
3.1
3.1
3.1
3.1
Channel Bonding
32 x 8
32 x 8
32 x 8
32 x 8

Reviews

Rating 4.4 out of 5 stars with 814 reviews

Rating by feature

  • Rating 4.4 out of 5 stars

  • Rating 4.4 out of 5 stars

  • Rating 4.6 out of 5 stars

1 expert review

Expert rating, 4.4 out of 5 stars with 1 review.

|See all
85%would recommend to a friend

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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.

  • Rated 5 out of 5 stars

    Still the top MODEM after 2 years +

    If you live in an older house - with thick walls, you likely will need to buy your own modem and router. This is something I've had to do ever since wireless internet devices existed, as no matter which ISP you have, typically they give you (whether for free or for a monthly fee) a modem/router combo that will only work in small apartments or new homes with very thin walls. AND every few years you will need to update these devices. I bought this one in 2020 and still in 2024 it's considered one of the top modems you can buy. When we all started working from home I found then that my system was a PROBLEM... In addition to this I also purchased a MESH router system - in 2020 I bought Deco M9 Plus but now upgraded to a more robust system. Thankfully I didn't need to change THIS MODEM because the routers have the necessary speed 2.5GB Ethernet, that goes with the new routers I purchased this year. I've had this for 2 years and it's still going strong. I did update my routers in 2024 from 5G to 6 + 6E routers. Working from home requires more robust communications. I also tend to switch ISP's every couple of years to get the best price offers and (doing the math) to make it equal to what you save from NOT using the rented routers, you should look at what this costs in comparison to what the ISP charges you for renting their modem/routers. In my history of buying my own modems that usually works out to about the 2 year time when your contract ends and they raise your basic internet price (I've never had cable) - and with that - it's perfect for when it's time to make a switch. I've had no performance issues with this and recommend it for the compatible ISP you may have! We use three VOIP landline phones - for 2 family members PLUS a third one for a home office phone. Additionally our family has a few smart TVs, we use smart home devices to control outside lights and an outdoor security camera system. Our routers are both ethernet connected, wireless and use powerline connectivity too. This modem - the connection with the ISP has to be good enough, and it handles it all! HIGHLY recommended. The only reason I may replace it is when it's time to change ISP providers as in our area of the two choices, Xfinity and FIOS, only the first one is compatible with this modem. If I can negotiate the right price with the ISP provider, I'll stick with this one and hope that I can do that when the time comes. This has been great and I really don't want to change if I can avoid it.

    Posted by PhillyKat

  • Rated 5 out of 5 stars

    Best modem for the price range!

    My opinion, this Motorola 8611 is the absolute best modem only (no Wi-Fi or Voice) available right now in this price range. I tested both the competing Arris S33 & Netgear CM1000 and they both under delivered in down and upload speeeds compared this modem with Comcast Xfinity service. Others may have issues if they’re running multiple splitters. About 5 years ago, I had Comcast run a direct (as direct as you can get) line to my cable wall outlet. They also installed a booster (I think that’s what it’s called) on my line at no additional cost. I pay for Blast Internet, 600gb down & 20gb up plan. Speed tests are showing 825gb down & 29gb up. I have this modem paired with a 3yr old Eero mesh router set up. I’m running 5 total Eeros and speeds are fantastic throughout my house. Of course they’re faster the closer you get to the wired base. The Modem was quite simple to pair using the Xfinity app. I just tapped add new modem and followed the instructions. It took a total about 15 mins for the modem to be fully paired. Then I decided to restart my router and was up and running 5 mins later. I’d recommend NOT calling Comcast to activate the modem and use the app instead. Overall, I would recommend this modem to anyone that does not want to pay the rental fee (I’ve never rented, so I cannot speak to the speeds of the rental device) and is looking to increase speeds that meet the DOCSIS 3.1 standard.

    Posted by Bobby

  • Rated 5 out of 5 stars

    Motorola MB8611

    Works very good no issues at all, no dropped connection getting the full speed from my Xfinity plan using ASUS gaming router. Overall is not running hot even though for years I have setup with small 5W desk fan to keep cool both the modem and the router my old router was still working after 7 years just was outdated. I hope this new one will last for quite a time with no issues.

    Posted by Mikele69

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