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Ultra-fast DOCSIS 3.1 performance modem allows you to Stream, game, conference and more with confidence. DOCSIS 3.1 supports speeds up to 10x faster with higher efficiency. Backwards compatible with 32x8 DOCSIS 3.0 so you can future proof your network.
Q: What is the warranty period for the modem?
A: The manufacturer's warranty for parts on the B12 Motorola Cable Modem is 2 years.
Q: Does the modem support Gigabit Ethernet?
A: This modem does offer Gigabit Ethernet speed.
Q: What is the maximum downstream data speed of the modem?
A: The maximum downstream data speed of this modem is 2.5 megabits per second.
Q: What are the dimensions of the modem?
A: The B12 Motorola Cable Modem has a product width of 4 inches, a length of 5.7 inches, and a height of 5.2 inches.
Q: Can the modem prioritize traffic using QoS?
A: This modem offers Quality of Service (QoS) traffic prioritization.
Q: How many LAN ports does the modem have?
A: This modem has one LAN port.
Q: Will this modem work with Xfinity residential?
A: undefined
Q: Does this modem work with my eero mess system?
A: Hi PamG, Thank you for your inquiry. To confirm compatibility details with your eero mesh system, we recommend reaching out to our dedicated support team at [email protected]. They’ll be happy to assist and provide the most accurate information for your setup. -Mitch

Ultra-fast DOCSIS 3.1 performance modem allows you to Stream, game, conference and more with confidence. DOCSIS 3.1 supports speeds up to 10x faster with higher efficiency. Backwards compatible with 32x8 DOCSIS 3.0 so you can future proof your network.

The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is capable of delivering true Gigabit speeds. It's approved for use with Cox, Spectrum, Xfinity and others supporting cable internet speed plans up to 1 Gbps. Upgrading your home network starts with your modem.

The CM1000 Ultra-High Speed Cable Modem, with speeds up to 1Gbps and DOCSIS 3.1 is 10X faster than DOCSIS 3.0 devices. It's backward compatible with DOCSIS 3.0 and ready for future service plan upgrades for XFINITY from Comcast, Cox, and Spectrum. A Gigabit Ethernet port provides faster access and downloads.

The ARRIS SURFboard S33 is a DOCSIS 3.1 Cable Modem that delivers the fastest speeds and the latest technology. With a 2.5 Gigabit and a 1 Gigabit Ethernet port, the S33 enables a multi-gig experience for things like online gaming, 4K video streaming and more. It’s best for cable internet speed plans up to 2.5 Gbps and setup is simple with an easy-to-use app. It's compatible with any Wi-Fi router and saves you money on monthly rental fees. Upgrade your home network with an SURFboard S33 DOCSIS 3.1 Cable Modem.
| Pros for Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black | |||
|---|---|---|---|
| There were no pros for this product— | Speed, Overall Performance, Ease of use, Setup, Connectivity | Speed, Ease of use, Setup, Performance, Compatibility | Speed, Overall Performance, Ease of use, Setup, Ethernet Port |
| Cons for Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black | |||
| There were no cons for this product— | Heat, Lag, Ethernet Port | Lag, Heat, Ethernet Ports, Signal Strength | Heat, Price |
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.
Very easy to install, it took about 15minutes. It looks great setting on the shelf and has remained connected and strong for about 2weeks now.
This review is from Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black
Posted by
Works well with spectrum cable. Easy to setup no frills simple modem.
This review is from Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black
Posted by ScottH
The Motorola B12 modem was easy to setup through my xfinity app. I struggled with the Motorola app. It kept saying this model is not supported in the app. Strange because in the instructions it says you can use the app. Fortunately, I connected through Xfinity. I have 1.2gb service and this modem is capable of 2.5gb service. Make sure you have at least 1gb in order to use this modem. Less service than 1gb will cause slower response. This information was provided by Motorola. The modem has been flawless. I find there have been 'no signal drops' in the week I've owned the modem. There is zero lag. The modem immediately connected with my mesh routers and together there has been no issues. No conflicts. This modem supports all the current standards with DOCSIS 3.1 Connectivity is great with all my devices, phone, tv, and computer. The modem is small in size and doesn't have the traditional bank of upload, download, power, connectivity lights of other modems. It has 1 singular dot of light when on. During setup there is a set of blinking sequences of that one light that mean different things. Personally, I like this small footprint. This modem will save you a lot of money versus renting from your cable provider. It is insane to me why anyone would rent their modem from the cable provider in this day and age. The app needs work, but in reality if you have one of the big cable companies you can setup the new modem through them. Motorola needs to do a better job on the app. It is far from a deal breaker though. Frankly, it is just an annoyance. I think Motorola has an excellent modem here. The modem is backed by a one year warranty.
This review is from Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black
Posted by AFASOX
