MOTOROLA 8x4 Cable Modem, Model MB7220, 343 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Time Warner Cable, Cox, BrightHouse, and More (No Wireless)

We've had this modem for about 2 years. Works great, plenty of range, has never given us any problems.

Bought this for my mom. She has Comcast and is on their 100Mbps plan, so no need for a more expensive modem that can do 300+Mbps. This one fits the bill perfectly, and saves her $13/month rental fee. Pays for itself in less than 4 months. Setup was super easy. Just screw in co-ax cable, plug it in, and then hook it up to your router (I did a direct wire to my laptop for setup). Go to the Comcast page and it let me set everything up online. In less than 30 minutes of me opening the box she was getting 100+Mbps download speeds. This MB7220 seems to be the replacement for the old SB6141 (which I have at home for the past 6 years without an issue). Hopefully the MB7220 last as long (or longer). Yes, this is an 8x4, DOCSIS 3.0 modem, a bit old by current standards (32x8 with DOCSIS 3.1 is the "top dog" now, with DOCSIS 4.0 being developed), but still works with most all cable providers, and should still be working for many years. It also provides the speeds needed for the average cable internet user, and still being inexpensive. If you have an internet plan that offers 150Mbps or faster, don't get this modem, it will be a bottleneck for you. It is not a modem issue, it is just this was not designed for those speeds and you need to look for a 16x4 or faster modem.

I got this to replace a $100 netgear modem, which was giving me speeds wayyyy under what we were paying for - we’re on a 150 mb plan and I was getting maybe 2 mb download speeds. On a good day Netflix would only crash 3 times. I did some research and a lot of cheaper modem options have some kind of faulty chipset which gives users issues of poor connectivity, having to reset constantly all the time etc. This one seemed to be the only reasonably-priced modem with reliable electronics. I set it up with the cheapest modem I could find (I think it was like $15), and I’m blown away at the improvement. Streaming never crashes, a 24-hour download now takes a couple of hours, and I never have connectivity issues. I’m certainly no modem expert so I don’t have much of a frame of reference outside of my super problematic old modem, but I’ve had this one for a couple of months and it’s worked exactly as I expected. My needs are pretty modest as I live in a small house, so I’m sure your mileage may vary if you have more strenuous expectations, but I’m very pleased with this purchase.

This is an affordable modem that is giving me good bandwidth over a wired connection. It was easy to set up and the various lights on the front are fairly clear. My only downside is that I had significant issues getting decent bandwidth over the wifi connection. I live in an apartment building and everyone has wireless routers, so I think there's a lot of interference from that. After researching the issue, it sounds like I need to get an app that will look for whatever clear channels may exist and then manual set this modem to broadcast on those channels. Honestly, I just haven't had the time to do that yet. Instead, I just ran a wired connection to my TV for streaming and that works great. And then I'm just using wifi for my phone and tablet, which don't need as much bandwidth. At some point I'll feel like a technical project for an afternoon and I'll get the channels set correctly, but it just hasn't happened yet.

We recently upgraded to 200 Mbps internet speed and my old Arris modem couldn't handle that speed. So I decided to try out Motorola for a change, based on its good reviews, plus it was several bucks less than a new comparable Arris. Turns out the Motorola works great. Easy to hook up, after which I just needed to call my cable company (Wide Open West a.k.a. WOW) for them to activate the modem. Once done, this thing flew! I consistently pull 200+ Mbps down on it. (Regardless of the box saying "343 Mbps maximum speed", really this modem is perfect for my 200 Mbps internet package. It's certified by Comcast for 200 and WOW in my area subleases Comcast's network. Looks like Charter and Cox certified it for 150 per the graphics in the product listing.) One last thing: Some cable modems get hot, but this one is just warm to the touch and not hot at all. I don't foresee it having an issue overheating. It has plenty of ventilation on the sides and top. If anything changes, I'll update my review, but for now, this modem seems like a solid purchase.

I am really sorry to write this review. But I have to agree with the one and only reviewer that complained about the odor of this modem. As soon as I opened up the box, I smelled that circuitry/plastic burning smell... just as the reviewer did. And I too hoped it would fade. After two weeks of use… it has faded… some. But the odor is still there. If the odor was the only problem, I wouldn’t be writing this review. Because it probably would dissipate after some time. But I have noticed my throat feels weird and my mom has been coughing lately. Which makes me worry about the quality of our air with this thing. At first glance, the modem is just what I wanted. It is much smaller than my Optimum modem and it is working perfectly. Because of that I added one star. But worrying about my health and that of loved ones, just by using this modem, has me preparing it for its return to the Amazon warehouse. I really wonder if this modem isn’t the same as the one my fellow reviewer complained about and returned. I haven’t found anyone else mentioning the odor. So either their noses aren’t noticing it, or this is a fluke. UPDATE: Well, it's been a few more weeks and the odor has lessened greatly. It's working perfectly. Hopefully it will continue. Now that the smell is significantly less, I can't complain about the modem at all. I love that I can turn it off when it's not in use. My old one from my cable company didn't have that option. And my internet is working just fine. Thank you to the Motorola Customer Service Rep who responded to my review. All seems fine now. So I am upping my rating to 3 stars. In all fairness, it could have been a five star rating if it wasn't for the air quality issue that happened at the start.

I purchased this modem along with a new dual-band router to replace a Motorola (Arris-made) SBG6580 gateway, which had both a cable modem and router integrated into one box. After adding a number of Amazon FireTV sticks to my TVs, the SBG6580 started locking up, requiring a hard reset. The SBG6580 was 8 years old. I suspect the numerous wired and wireless devices was overloading the NAT table and memory of the router portion and locking up the unit. I decided to go the separate cable modem and router path. This modem has been great! It has 8 downstream and 4 upstream channels, the same as the SBG6580. My internal Ethernet wiring and switches are currently optimized for 100Mbps. My Comcast plan tops out at 75-80 Mbps, a good match for the hardwired Ethernet capacity. This modem is more than capable of handling that speed. Upgrading to more downstream channels or a DOCSIS 3.1 unit would be wasted capacity for my situation. Just a note of caution. Arris is the company that purchased the Motorola division that made cable modems and retained much of Motorola's engineering talent. Arris abandoned the Motorola branding, which was picked up by Zoom Telephonics. Zoom is the company making this modem. The quality is still very good, but don't try calling Arris for support! When I added the modem to my Comcast account, it showed up on my account as a Zoom Telephonics device, not Motorola. I called to correct this, as I wanted to be sure they pushed the correct firmware updates to the device. They confirmed that it was correct. Just saying, if you catch those little details like I do, When Comcast sees a modem with a different MAC address, any browser routes to their self-activation page, where the replacement modem can be set up by the end-user. Not realizing this, I called Comcast. It probably took longer doing it that way, but in the end it came on-line without a hitch and has worked great in combination with my new dual-band router. The SBG6580 crashes are gone, but I kept it to use in "bridge" mode as a backup modem. The crashes likely only affected the router portion of the box. The unit is quite attractive and has a real power switch near the top of the case back, making any rests quite simple. Highly recommended!

Do NOT buy this as your Comcast modem. It is only $20/$30 cheaper than something that will work 10x better. The modem worked fine until the COVID pandemic. That’s when I learned first hand why all those channels matter. This modem only has 8 channels to try. I can’t get support or a warranty since this drops signal constantly. Xfinity came to my house and tested from the telephone pole to my router. The modem was the only weak point. I asked the guy what he has in his house and why. He has an Arris Surfboard 32 or 36 channel (can’t remember exactly) and it works way better. Pros: $20/30 less than a good modem Works in light use environment Minimal restarts. Cons: No support at all Only 8 channels Weakest point of my network Only worked for 6 months UPDATE: I ran this modem for only about 6 months. At the recommendation of my internet provider I replaced it with the modem he recommends. My internet has never been more reliable. This can 100% ruin your internet.