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Motorola MB8600 DOCSIS 3.1 Cable Modem - Approved for Comcast Xfinity, Cox, and Charter Spectrum, Supports Cable Plans up to 1000 Mbps | 1 Gbps Ethernet Port
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Purchase options and add-ons
Brand | Motorola |
Internet service provider | spectrum, optimum, cox, xfinity |
Connectivity Technology | Cable |
Compatible Devices | Personal Computer |
Product Dimensions | 7.25"L x 2.25"W x 7.88"H |
About this item
- Top Internet Speeds for all Multi-gigabit Speed Tiers - Wirecutter recommends this model as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services.
- Save Money - Eliminate up to 168 dollars per year in cable modem rental fees (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
- Flexible Compatibility - Pair with any Wi-Fi router you’d like, including Whole Home Wi-Fi or Mesh routers like eero, Google Wi-Fi, and Orbi. A 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station. This cable modem does not have a built-in wireless router or telephone call capability.
- Proactive Network Security - A broadcom chipset provides advanced security from denial-of service attacks.
- Active Queue Management (AQM) - AQM significantly reduces Internet latency on both DOCSIS 3.1 and 3.0 services, resulting in faster page loads for all Web traffic and enhanced interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.
- Motorola MH7603 WiFi 6 Mesh 3 Pack + MB8600 Gigabit DOCSIS 3.1 Cable Modem – BundleThis bundle contains 2 items
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This Item Motorola MB8600 DOCSIS 3.1 Cable Modem - Approved for Comcast Xfinity, Cox, and Charter Spectrum, Supports Cable Plans up to 1000 Mbps | 1 Gbps Ethernet Port | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $172.34$172.34 | -10% $197.99$197.99 List: $219.99 | $99.99$99.99 | -23% $189.99$189.99 New Price: $249.98 | $57.99$57.99 | -25% $149.99$149.99 List: $199.99 |
Delivery | Get it as soon as Monday, Mar 25 | — | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Tuesday, Mar 26 |
Customer Ratings | ||||||
Easy to install | 4.4 | 4.2 | 4.4 | 4.0 | 4.3 | 4.2 |
WiFi signal | 3.9 | 3.7 | 3.8 | 2.5 | 3.9 | 3.8 |
Tech Support | 3.5 | 3.2 | 3.1 | — | 3.7 | 3.4 |
Value for money | 4.1 | 3.8 | 4.3 | — | — | 4.0 |
For gaming | 4.5 | — | — | — | 4.5 | 3.8 |
Sold By | Fliptek | Amazon.com | Hitron Americas | Motorola Networking Renewed | Abe's Electronics Center | MTRLC LLC |
connectivity tech | Cable | Ethernet | Ethernet | Wi-Fi, Ethernet | Wired | Wi-Fi, Ethernet |
ethernet ports | 2 | 2 | 2 | 4 | 1 | 4 |
number of ports | 6 | 2 | 3 | 4 | 8 | 4 |
data transfer rate | 6 gigabits per second | 2500 megabits per second | 1 gigabits per second | — | 680 megabits per second | 1 gigabits per second |
max downstream rate | 686 megabits per second | 2500 megabits per second | 1 gigabits per second | — | 343 megabits per second | 1000 megabits per second |
max upstream rate | 1 gigabits per second | 2.5 gigabits per second | — | — | 123 megabits per second | — |
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Customer Review: Easy, effective, and fast modem
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Excellent Alternative to ISP Provided Modem
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Product guides and documents
Product Description
The smart choice for your cable Internet service
Eliminate monthly cable modem rental fees – Typically saves 156 dollars per year in Xfinity cable modem rental fees. Actual savings depend on your service provider.
1,000+ Mbps – Maximum actual Internet download speed
GigE Ethernet port – For a high-speed wired connection to any router, computer, or other Internet-capable device.
Connect any WiFi router you choose
Plugs easily into any router for shared Internet access by all your WiFi and Ethernet-capable devices. This flexible approach lets you pair this cable modem with any router you choose for your WiFi needs, including a mesh router or gaming router.
If the MB8600’s Ethernet port isn’t used for a router, it can plug into a computer, HDTV, game station, or other Ethernet device.
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Compatible with Most Cable ProvidersCertified by Comcast Xfinity, Cox, and other cable providers.*† * Not compatible with Verizon, AT&T, CenturyLink, and other fiber optic, satellite, or DSL services. † This cable modem does not have telephone jacks for the support of voice calls. |
Ultra-Fast Internet SpeedFor other service providers, supported service speeds are similar to Comcast. |
Easy SetupConnects fast with just 3 connections – power, coax cable, and Ethernet. |
MB7420 | MB7621 | MB8600 | MB8611 | |
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Customer Reviews |
4.4 out of 5 stars
6,311
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4.4 out of 5 stars
28,808
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4.4 out of 5 stars
28,808
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4.4 out of 5 stars
28,808
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Product Type (This table only includes cable modems with NO built-in WiFi router) | 16x4 Cable Modem | 24x8 Cable Modem | DOCSIS 3.1 plus 32x8 3.0 Cable Modem | DOCSIS 3.1 plus 32x8 3.0 Cable Modem |
DOCSIS Channel Bonding | 16x4 DOCSIS 3.0 | 24x8 DOCSIS 3.0 | DOCSIS 3.1 plus 32x8 DOCSIS 3.0 | DOCSIS 3.1 plus 32x8 DOCSIS 3.0 |
Certified for These Cable Internet Services. Typically Works with Many Others. | Comcast Xfinity, Cox, Spectrum, Suddenlink, Sparklight (CableOne) | Comcast Xfinity, Cox, Spectrum, Suddenlink, Sparklight (CableOne) | Comcast Xfinity, Cox | Comcast Xfinity and Cox |
Recommended by Comcast Xfinity for Internet Service This Speed Tier or Below | 300 Mbps | 600 Mbps | 1000 Mbps | 1000 Mbps |
Maximum Internet Download Speed (Actual speeds are lower) | 686 Mbps | 1000+ Mbps | 6000 Mbps | 1 Gbps |
Built-in WiFi Router | No | No | No | No |
Built-in Telephone Port | No | No | No | No |
Works With Any WiFi Router That Has an Ethernet WAN port | ✓ | ✓ | ✓ | ✓ |
2.5G Ethernet Port | ✓ |
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Product information
Product Dimensions | 7.25 x 2.25 x 7.88 inches |
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Item Weight | 1.09 ounces |
ASIN | B0723599RQ |
Item model number | MB8600 |
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #6,121 in Electronics (See Top 100 in Electronics) #14 in Computer Networking Modems |
Is Discontinued By Manufacturer | No |
Date First Available | May 17, 2017 |
Manufacturer | MTRLC LLC |
Warranty & Support
Feedback
From the brand
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance and stability of the modem. For example, they mention it delivers high performance and is capable of handling higher speeds. Customers also appreciate ease of installation. That said, some complain about the reboots. Opinions are mixed on quality, compatibility, and value.
AI-generated from the text of customer reviews
Customers like the performance of the modem. They mention that it delivers high performance and stability, and is capable of handling higher speeds. Some say they haven't had any lagging or any buffering, and that it works great with XFINITY. Some customers also say that they have a decent expectation of a great ROI, and it works with the ISP WOW.
"...Plus it's blazingly fast." Read more
"...This modem is a game-changer, offering blazing-fast internet speeds and seamless compatibility with any WiFi router...." Read more
"...Activation worked fine.I did get a dead on arrival modem the first time. I guess the quality check in production is not quite there...." Read more
"...It was frustrating to watch a movie only for it to stop and start buffering...." Read more
Customers find the installation process of the modem to be easy. They mention that the instructions are thorough and easy to follow. Some customers also mention that it is simple to add online with Comcast.
"...Setting up the MB8611 was a breeze. It's a plug-and-play device, so all I had to do was connect it to my coaxial cable, power it on, and it was..." Read more
"...I got the Motorola AC2600 4x4 WiFi Smart router. Installation of both devices was very easy. Literally, plug and play...." Read more
"...Installation with Xfinity is a breeze now. Just hook the modem up, go to xfinity.com/activate. Punch in your cell phone number for the account...." Read more
"...So far it appears I worried needlessly. Setup and activation was a breeze...." Read more
Customers like the stability of the modem. They mention that it has been stable so far with no issues, it is strong, and well-designed. Customers also appreciate that the mode is designed to handle a much higher load.
"...I believe this to be a well designed, solid modem...." Read more
"...This cable mode delivers not only the high performance and stability, but absolutely the easiest cable modem installation that I have done yet...." Read more
"...This modem is thermally designed to handle a much higher load, which means that if used way under load, I should rarely, if ever, have failures due..." Read more
"...advertised as plug-in-play with XFINITY, this product has been very reliable so far. Runs very cool and quiet...." Read more
Customers are mixed about the quality of the modem. Some mention that it's a good modem that delivers the full bandwidth, while others say that they are not the rock solid modems from the early Motorola generation, that the router isn't strong enough for the whole house, and that the mode was likely just a faulty unit.
"...Wow. I really like this modem. This is a barebones rock solid dead simple workhorse...." Read more
"...Another standout feature of this modem is its multi-gigabit capability...." Read more
"The modem works great, but the 12v wall wort failed after 5 months...." Read more
"...the Broadcom's offering -- and for very good reasons, it has great hardware specs...." Read more
Customers are mixed about the value of the modem. Some mention that it is a good value, while others say that the value is mediocre at best and disappointing at worst. Some customers also say that it increases the price of an obviously defective modem and makes it useless.
"Pricy, but worth it. Motorola is the go to brand for high quality...." Read more
"Reasonably priced, easy to install and almost a 40% increase in download speed...." Read more
"...from the 192.168.100.1 web server, makes it, once again, totally useless." Read more
"...-The future of modems, great investment at a better price than the Netgear and ARRIS branded 3.1 modems...." Read more
Customers are mixed about the compatibility of the modem. Some mention that it works well with any WiFi router, while others say that it is not compatible with Xfinity's gigabit plan.
"...Unfortunately I have to return it in that it is not compatible with my Spectrum plan." Read more
"...That's it. It makes a connection. And hasn't failed since I got it a month or so ago...." Read more
"...It doesn't store but a few entries...." Read more
"...Just google "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing" on MB8611...." Read more
Customers have connectivity issues with the modem. They say that it loses the LAN connection every five minutes, and cannot obtain an Internet connection. They also say that the mode does not have phone connection and does not provide WiFi. Customers also mention that the admin port does not work, and that the 8 unused channels are not used.
"...It doesn't have phone connection like the ISP's modem did...." Read more
"...Comcast quickly (according to the lights); but, I could not obtain an Internet connection...." Read more
"...gentlemen comment on this review saying that the modem doesn't have any router functionality what so ever and that a separate router was needed...." Read more
"...It supports link aggregation, allowing me to combine two Ethernet ports for even faster speeds...." Read more
Customers are dissatisfied with the reboots of the modem. They mention that it reboots a few times a week, and the mode itself reboots every couple of hours. The internet would stutter and froze, and it would take forever to load. The modem also has intermittent T3's resulting in modem reboots.
"...was pretty easy, but after a month and a half, the modem would suddenly reboot with no warning. No power issues...nothing obvious...." Read more
"...1.5yrs of ownership it has dropped signals numerous of times, needing constant resets...." Read more
"...After further troubleshooting I determined that the modem itself was rebooting every couple of hours...." Read more
"...change to another port, or something of that nature, you may have to restart the unit." Read more
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Wow. I really like this modem. This is a barebones rock solid dead simple workhorse.
It's got a plug for the cable and one ethernet (RJ-45) port out and I think an on/off switch.
That's it. It makes a connection. And hasn't failed since I got it a month or so ago.
All I had to do was call my ISP and give them the MAC address (on the sticker on the device)
and they updated their tables and that was it. Turn it on. It goes through the startup cycle. Takes a few minutes to connect like they all do and that's it. Set it and forget it.
What prompted me to get it, is I don't like having to rent the modem from the ISP @ $10.00/mo forever. This literally pays for itself in 16 months, and most people will have their Internet connection for many times that long, and time flies. So it's a good investment.
It doesn't have phone connection like the ISP's modem did. So I called the company/provider that owns copper phone lines in the area and ordered landline service. I'm a nerd/techie and don't care what people say about landlines being for old fogeys, it's like having a backup generator ... I know I can use that landline if the power goes out or if the cell tower gets overwhelmed (too many calls or cell traffic at once), or there's radio interference in the area. Technically cable phone is a 'land line' (hardwired cable connection to provider) and the battery backup in the modem (which the ISP charges more for), could give you emergency phone service in an outage, but a cable phone connection can (and does) fail for more reasons than copper wire phone service does. (Those copper wire connections are called POTS - which stands for Plain Old Telephone Service), and copper wire phones are the most reliable.
Having a separate modem from a router is optima for a few of reasons... Generally hybrid units of anything do everything okay, but nothing optimally (for example combination modem-router units like my ISP rents out). Better to keep the modem separate from the router. Then you can swap either out independently to upgrade as needed, disrupting less of your own network configuration doing so, and also help avoid a single point of failure. Plus, you might be able to score a router in a pinch on shorter notice than a cable modem if the router is the component that fails. Then you can choose the router you actually like, for whatever reason, and don't have to settle for whatever bundling du jour your ISP decides is right for you (even if it isn't).
That gets me to the other point. What DID the ISP decide was right for me (but wasn't)?
For awhile my ISP modem connection was dropping briefly in the middle of the morning. My computer came back up connected to the ISP's 'general public' wi-fi connection to their router which did not work for me and I'd have to keep manually switching back to my own internal Wi-Fi LAN (network). That was not only inconvenient but it forced me to investigate was was going on there.
I learned my ISP gives lets passersby connect to their rental-modem's Wi-Fi signal, without giving me any way to disable that service! That really pissed me off to learn. The idea is that people driving around who have accounts with the provider can get internet access around the neighborhoods. If I was a passerby, that could really help me, so at first glance maybe 'why not, be a good samaritan'.
But wait! There may be more too it than that.
Besides the fact that I don't like it (for good reason), they give me no control over that 'feature'!
And I see some downsides. What's good for the ISP isn't necessarily optimal for me.
What I don't like about that 'service' is that one or more people could sit outside and suck down bandwidth (e.g. slow my connection down), unbeknownst to me. It also might cause the unit to use more energy and put out a stronger wi-fi signal than it needs to. Which health conscious people are well advised to be aware of. Wi-Fi is radiation. Not strong and may not ruin your life, but it is a stressor at a cellular level, this is known. And strong signals, persistent signals and people who are more sensitive or have immunity issues can be more vulnerable (headaches, sleep disruption, or worse). But I like Wi-Fi so I settle for whatever unknown health consequences I may not be aware of.
Also it makes me wonder if a hacker might be able to use it as an additional point of access to my home network.
I also wonder if it's 100% clear to law enforcement at first glance who might be visiting sites or doing something nefarious from the connection point. Might it look like the owner is doing something that a passerby did (and even if they can sort it out later, what if it takes awhile to figure out and they make a bad assumption?)
Anyway, I don't have that problem with this modem and I'm just much happier with it all the way around.
Plus it's blazingly fast.
Setting up the MB8611 was a breeze. It's a plug-and-play device, so all I had to do was connect it to my coaxial cable, power it on, and it was ready to go. Pairing it with my existing WiFi router was equally effortless, and I was up and running in no time.
The performance of this modem is truly impressive. With DOCSIS 3.1 technology, I'm getting speeds that are multiple times faster than my previous modem. Whether I'm streaming 4K content, gaming online, or video conferencing, the MB8611 delivers a smooth and reliable connection without any lag or buffering.
Another standout feature of this modem is its multi-gigabit capability. It supports link aggregation, allowing me to combine two Ethernet ports for even faster speeds. This has been a game-changer for me, especially when transferring large files or hosting online meetings with multiple participants.
Overall, the Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem has exceeded my expectations in every way. It's a high-performance, easy-to-use device that has significantly improved my internet experience. If you're in the market for a new modem, I highly recommend the MB8611.
For about three years, I was using the same Roku device that was provided free with my Sling subscription. It was frustrating to watch a movie only for it to stop and start buffering. It was frustrating to try and watch YouTube content only to crash during the "loading" period or stop in the middle due to buffering issues.
After researching and troubleshooting I came up with the following fixes that have resulted in awesome streaming, seamless channel surfing and no buffering once any channel is loaded (within 5 seconds or so).
First, you need to run a speed test of your current internet. You should get results like 400mbps on a higher end laptop (i.e., Macbook Pro). If you get anything less, you need to up your internet service provider download speed. If you have multiple devices, I recommend at least 600mbps. Ideal would be 1000mbps. Next you need to make sure your modem can handle the speed. I got a Motorola MB8600 modem. This modem will handle speeds in the gigabit range. Hold on, that's not all. With this modem you need to get a router that can continue to support the new speed and the internet service that you are working with. I bought a Motorola AC2600 4x4 WiFi Smart router. This router will increase coverage to your home and will seamlessly support the internet speed and connectivity of the Motorola modem.
All three of these devices compliment each other and will help you dramatically improve your video streaming ability. Please keep in mind that if your internet service isn't high enough, you will not get much of an increase in performance. You have to look at the entire system in your home.
1. The internet service that you are paying for monthly. This is critical. It has to be high enough (600-1000mbps).
2. A good Modem. Your modem is the device that takes the internet signal coming from your service (i.e., Xfinity, Verizon). I recommend you make sure your modem can handle speeds in the gigabit range. This should be good for about 3-5yrs.
3. A good compatible router. The router takes the signal from the modem and splits it so that multiple devices can use the internet signal coming into your home. Note- There are cable modems out there that are combination modem/routers. If you are on a budget they will work. However, I have found that my new combination of separate modem and router has improved my internet performance tremendously.
Lastly, if you are on a budget and can't afford all the upgrades, then getting this Roku device will just be a waste of money. This Roku device is a high-end streaming device that will only perform at it's best if you have all the other devices in place that can provide the clean and fast internet signal it needs. I did a complete overhaul of my home system and can't be more pleased with the results. I replaced each component that I've described in stages just to see if each device really made a difference (a noticeable difference). I'm happy to report that each stage made a big difference.