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  • Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)

Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)

4.2 out of 5 stars (150)

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About this item

  • This 鶹 Renewed product is professionally inspected and tested by an 鶹 qualified supplier. Box and accessories may be generic.
  • Fast DOCSIS 3.1 connectivity with fallback to 32x8 DOCSIS 3.0
  • Supports cable modem services, downloading 46 times faster than DOCSIS 2.0.
  • Active Queue Management (AQM) significantly reduces Internet latency. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing
  • Full-band Capture digital tuner enhances speed and saves energy

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This item: Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)
$152.82
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Product description

With support for data transfer rates of up to 3.8 Gbps, theMB8600 DOCSIS 3.1 Cable ModemfromMotorolais capable of supporting a variety of bandwidth-intensive tasks such as online gaming, streaming multimedia content and more. Additionally, this Motorola modem supports the DOCSIS 3.1 cable standard along with Active Queue Management (AQM), which is designed to reduce network congestion and speed up online tasks such as page loads, gaming, video conferencing, and more. On the back of the MB8600 you will a single Gigabit Ethernet port making it easy to connect this modem to a router, computer, or other Ethernet enabled device. Setup is easy, and with built-in lightning and power-surge circuits, you have additional protection against power spikes which can harm your modem. Fast DOCSIS 3.1 connectivity with fallback to 32x8 DOCSIS 3.0 Supports cable modem services, downloading 46 times faster than DOCSIS 2.0. Active Queue Management (AQM) significantly reduces Internet latency. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing Full-band Capture digital tuner enhances speed and saves energy IPv6 Internet addressing support

Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 18.42 x 5.72 x 20.02 cm; 930 g
  • Manufacturer ‏ : ‎ Motorola
  • ASIN ‏ : ‎ B07FCRVB8Y
  • Manufacturer reference ‏ : ‎ MB8600CR
  • Customer Reviews:
    4.2 out of 5 stars (150)

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Product information

Technical Details

Brand ‎Motorola
Manufacturer ‎Motorola
Part Number ‎MB8600CR
Compatible Devices ‎Personal Computer, Router
Batteries included ‎No
Batteries Required ‎No
Data transfer rate ‎3.8 Gigabits Per Second
Modem type ‎Cable
Number of Ports ‎1
Connector Type ‎Ethernet
Manufacturer ‎Motorola
Manufacturer reference ‎MB8600CR
Product Dimensions ‎18.42 x 5.72 x 20.02 cm; 930 g
ASIN ‎B07FCRVB8Y

Additional Information

Date First Available Feb. 20 2019
Customer Reviews
4.2 out of 5 stars (150)

4.2 out of 5 stars
鶹 Rank
Is discontinued by manufacturer No

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Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)


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Customer reviews

4.2 out of 5 stars
150 global ratings

Customers say

The modem works well and provides much faster speeds with quick performance. Customers find it super easy to install with everything needed for quick hookup. However, some users experience connectivity issues, as they could not connect with their internet provider and it did not work consistently with their ISP.
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28 customers mention reliability, 21 positive, 7 negative
Customers report that the modem works really well and runs fine with no issues. Users find it very capable and note that it works great with Xfinity Gigabit internet service.
14 customers mention speed, 11 positive, 3 negative
The modem delivers much faster speeds and is quick to connect. It supports up to 1.3gb service speeds and provides great signal quality.
8 customers mention easy to install, 7 positive, 1 negative
Customers find the modem has easy setup and is easy to connect.
7 customers mention compatibility, 0 positive, 7 negative
Customers experience significant compatibility issues with this modem. They report it cannot connect with internet providers, does not work consistently with ISPs, and does not work with Comcast. Users also mention intermittent connection drops, looping while trying to connect, and being unable to get it to work with Xfinity.

Top reviews from other countries

  • Gary F
    5.0 out of 5 stars Quality product - pretty much as advertised/listed.
    Reviewed in the United States on January 31, 2026
    Verified Purchase
    Received in a plain, carefully shrink-wrapped cardboard box with a clear "REFURBISHED" label on the outside and bubble wrap inside. Cosmetically, the modem looks to be in like new condition, with protective film over indicator lights still intact. Looks like a generic power adapter provided, but perfectly fine and functional. A yellow Cat 5e ethernet cable was included along with an original OEM Quick Start guide. The only thing missing was the little "coax connection" wrench - which obviously is No Big Deal. I left it plugged in overnight to make sure it was electrically "burned in", then installed it today on our existing Xfinity service using the Xfinity app on my phone. Painless, easy and only took maybe 10 minutes. Modem seems to be running fine, have not checked wired "max" connection bandwidth yet but I will maybe tomorrow. This replaced a much lower-spec Linksys modem that served us very well for nearly 10 years -- still running but functionally obsolete.
    Update -- getting download speeds easily in excess of 500mbps as measured while operating wirelessly on various devices with our also-new TP Link BE230 router -- well in line with expectations for my Xfinity subscription. This modem was a great upgrade investment for us and we are very pleased.
    Customer image
    Gary F
    5.0 out of 5 stars
    Quality product - pretty much as advertised/listed.

    Reviewed in the United States on January 31, 2026
    Received in a plain, carefully shrink-wrapped cardboard box with a clear "REFURBISHED" label on the outside and bubble wrap inside. Cosmetically, the modem looks to be in like new condition, with protective film over indicator lights still intact. Looks like a generic power adapter provided, but perfectly fine and functional. A yellow Cat 5e ethernet cable was included along with an original OEM Quick Start guide. The only thing missing was the little "coax connection" wrench - which obviously is No Big Deal. I left it plugged in overnight to make sure it was electrically "burned in", then installed it today on our existing Xfinity service using the Xfinity app on my phone. Painless, easy and only took maybe 10 minutes. Modem seems to be running fine, have not checked wired "max" connection bandwidth yet but I will maybe tomorrow. This replaced a much lower-spec Linksys modem that served us very well for nearly 10 years -- still running but functionally obsolete.
    Update -- getting download speeds easily in excess of 500mbps as measured while operating wirelessly on various devices with our also-new TP Link BE230 router -- well in line with expectations for my Xfinity subscription. This modem was a great upgrade investment for us and we are very pleased.
    Images in this review
    Customer image
  • Allen
    5.0 out of 5 stars Speed is what you need
    Reviewed in the United States on January 7, 2026
    Verified Purchase
    Modem worked like a champ. Considerable improvement on speed.
  • Madelinn
    5.0 out of 5 stars Fantastic refurbished product!
    Reviewed in the United States on February 5, 2026
    Verified Purchase
    My cable company recommended a modem upgrade and this was one of them. I purchased a refurbished one and couldn't be happier with the outcome. It was super easy to install, works quickly, and seems to be great quality. My previous modem was also a Motorola which I had for five years.
  • Adrian
    5.0 out of 5 stars Like new condition and works great
    Reviewed in the United States on June 2, 2024
    Verified Purchase
    Wasn't in the original box, but it was packaged very well. The ethernet cable, AC adapter and modem all looked new. I couldn't find anything to indicate it had been used.

    Installing the modem is super easy, just connect the coaxial cable, ethernet (to my wifi router) and AC adapter. Disconnecting the old modem and trying to clean up my cable routing took a while and was a pain, but that's on me for always having such bad cable management. Don't forget to call your ISP to have the new modem activated on your account.

    This modem replaced a Motorola MB7420, which was a little to old for my current 600mbps internet plan. With the MB8600 I'm getting as much as 574mbps, compared to the low 400's with the previous modem. The MB8600 is physically larger than the MB7420, but runs significantly cooler.

    I'm quite happy with this refreshed/refurbished modem. It was far less expensive than a new one and so for it's working just like new.
    Customer image
    Adrian
    5.0 out of 5 stars
    Like new condition and works great

    Reviewed in the United States on June 2, 2024
    Wasn't in the original box, but it was packaged very well. The ethernet cable, AC adapter and modem all looked new. I couldn't find anything to indicate it had been used.

    Installing the modem is super easy, just connect the coaxial cable, ethernet (to my wifi router) and AC adapter. Disconnecting the old modem and trying to clean up my cable routing took a while and was a pain, but that's on me for always having such bad cable management. Don't forget to call your ISP to have the new modem activated on your account.

    This modem replaced a Motorola MB7420, which was a little to old for my current 600mbps internet plan. With the MB8600 I'm getting as much as 574mbps, compared to the low 400's with the previous modem. The MB8600 is physically larger than the MB7420, but runs significantly cooler.

    I'm quite happy with this refreshed/refurbished modem. It was far less expensive than a new one and so for it's working just like new.
    Images in this review
    Customer image
  • Ty
    1.0 out of 5 stars WARNING** Intermittent connection drops
    Reviewed in the United States on June 22, 2024
    Verified Purchase
    I wish I could give this a zero-star rating. I’ve had Docsis 3.1 for a few weeks now, and it’s been nothing but a constant source of frustration. The intermittent connection drops are infuriating and seem to happen at the worst possible times. Whether I’m on an important video call, streaming a movie, or just trying to browse the web, this modem has failed me consistently.

    I’ve spent countless hours troubleshooting, restarting, and even replacing cables, but nothing resolves the issue. Customer service has been useless, offering generic advice that does nothing to fix the problem.

    Docsis 3.1 is the epitome of unreliability. If you’re looking for a stable internet connection, do yourself a favor and avoid this modem like the plague. Total waste of money and time.

Brand in this category on 鶹

Product Summary: Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)

From 鶹 Renewed

4.2 out of 5 stars, 150 ratings

Customer reviews

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About this Item

  • This 鶹 Renewed product is professionally inspected and tested by an 鶹 qualified supplier. Box and accessories may be generic.
  • Fast DOCSIS 3.1 connectivity with fallback to 32x8 DOCSIS 3.0
  • Supports cable modem services, downloading 46 times faster than DOCSIS 2.0.
  • Active Queue Management (AQM) significantly reduces Internet latency. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing
  • Full-band Capture digital tuner enhances speed and saves energy

Product description

With support for data transfer rates of up to 3.8 Gbps, theMB8600 DOCSIS 3.1 Cable ModemfromMotorolais capable of supporting a variety of bandwidth-intensive tasks such as online gaming, streaming multimedia content and more. Additionally, this Motorola modem supports the DOCSIS 3.1 cable standard along with Active Queue Management (AQM), which is designed to reduce network congestion and speed up online tasks such as page loads, gaming, video conferencing, and more. On the back of the MB8600 you will a single Gigabit Ethernet port making it easy to connect this modem to a router, computer, or other Ethernet enabled device. Setup is easy, and with built-in lightning and power-surge circuits, you have additional protection against power spikes which can harm your modem. Fast DOCSIS 3.1 connectivity with fallback to 32x8 DOCSIS 3.0 Supports cable modem services, downloading 46 times faster than DOCSIS 2.0. Active Queue Management (AQM) significantly reduces Internet latency. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing Full-band Capture digital tuner enhances speed and saves energy IPv6 Internet addressing support

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