Comcast XFINITY Approved Modems

20 thoughts on “Comcast XFINITY Approved Modems”

1. I purchased the Arris model SVG2482AC as it is listed in the above reference as one of the approved modems. I called Comcast and requested help to get it connected, I was informed this modem is not compatible with the xfinity and that I needed to return it to get a refund. Why do you have it on your list if it is not compatible?

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   1. Either Comcast lied to you or you may be in an area that is slower to certify devices for your local network. If you look at the product box in the link below, it states that the SVG2482AC is approved for XFINITY service. In fact, Comcast is the only ISP that has approved this modem/router/voice device.

      https://images-na.ssl-images-amazon.com/images/I/81fBdjdaNbL._SL1500_.jpg

      The ARRIS SVG2482AC is an approved modem for Comcast XFINITY service. You may want to call again to speak with someone else to try and activate your device. Sorry that Comcast put you through this inconvenience.

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   2. I’ve been a Comcast/Xfinity customer for more than 20 years. I am also highly technical and know more than ANY tech they can send out or put on the phone. I can assure you that Comcast technicians and engineers are roughly 95% useless. About 5% of the time you will engage with a Comcast employee that knows what they are talking about. I am serious; this has been my experience . I have even had 2nd and 3rd level engineers out to my house to troubleshoot an issue and they were pathetic and never fixed the problem. The last tech they sent out to fix a pixelation issue on one of my televisions actually told me that my signal was “too strong” and that she needed to install an amplifier to “reduce” the signal strength. I was stunned already at that point, but there was more to come. I explained to her that an amplifier would increase the signal strength and that if she wanted to reduce the signal she should install a splitter in line. She held up a splitter that clearly was the standard one input/two outputs splitter which was marked that the outputs attenuated the signal -3..5db each. This would effectively reduce the signal by half, but she argued that the splitter would “increase” the signal and that she needed to reduce the signal strength with an amplifier. I insisted she should investigate this and that not only did the splitter contradict her, but I showed her a website that clearly explained this. She balked and then went out to her work van. About 5 minutes later I walked out and overheard her asking her supervisor if she was correct about the amplifier/splitter functions. HE AGREED! At that point I told her to remove ALL the Comcast DVR’s in the house and cancel my TV service. When the supervisor hasn’t got a clue there is not much more you can expect than disaster. To be honest, I don’t even miss Comcast. I did not get another service and I am saving $2000/year. Some of you that are not technical may not understand this, but what she said and her supervisor agreed with is about the same as saying gas makes your car stop and an empty tank will get you further down the road. For a cable tech to say what they said is utterly unbelievable.

      The point here is do not take what the Comcast/Xfinity representative you spoke with as the last word. These people are STUPID in the extreme. Again, I will say I have met a couple of smart, knowledgeable techs, but that’s a rarity.

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      1. Thanks, Jack, for sharing your experience. It really is like playing the lottery and winning; on a rare chance, you may actually interact with a competent employee.

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      2. Similar experience here, but with internet, not speed. It took months, and I actually went to xDSL service for awhile, but eventually I was lured back by the high cable speeds. Four months into our re-subscription, I finally got a guy out that check infrastructure OUTSIDE of my house. What do you know, the node I was on at on one of their terminals was faulty. Comcast has a feathered nest from their near monopoly and just don’t care. But consistent with what “jack” says above, that one guy (about 5%) at cared enough to look further that my service drop. Since then, all has been good. But it’s not like I’ve needed any service from them in quite some time.

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      3. FARTHER down the road

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2. Do you know if any new DOCSIS 3.1 modems are expected to hit the retail market any time soon? I’m interested in upgrading to DOCSIS 3.1 (especially since Comcast nearly bricked my DOCSIS 3.0 in April via some “upgrade” to gig, which required us to spend an hour with tech support to partially fix the problems it caused), but if a new gen of 3.1 modems is likely to be released soon, I’d rather wait. Thanks.

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   1. Sorry, no news on any new next-gen DOCSIS 3.1 modems. Current-gen DOCSIS 3.1 modems are still relatively new (many ISPSs haven’t even upgraded to gigabit speeds yet).

      Keep in mind, most people don’t have access to gigabit speeds (expect that to take a few years to achieve). That really needs to happen first before several generations of DOCSIS 3.1 modems pile up.

      Officially supported DOCSIS 3.1 modems for Comcast XFINITY today are:
      ARRIS SB8200
      Motorola MB8600
      NETGEAR C7800
      NETGEAR CM1000

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      1. If the Netgear CM100 is officially supported by Comcast, then why in the master list does it have a red X and not the green box with the check mark? The same with the ‘Best Modem Value’ Netgear CM500 which also has a red X.

         The lists are not consistent.

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         1. Hello Brian.

            The red X and green check boxes refer to VoIP and WiFi capabilities. If a modem is on the master list, then it is approved by the ISP, but it may not have certain features you want (check the purple header at the top of the table). Thanks for the question.

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3. Using one of these Gateways. Will I still be able use the Xfinity (public) wifi hotspot? I sometimes use the hotspot instead of my home network.

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   1. Yes, Greg, Comcast will allow you access to the public WiFi hotspots if you are an Xfinity Mobile customer or subscribe to Performance Internet or above. Click the link for more info on Xfinity WiFi Home Hotspots FAQs.

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4. You people are either stupid or just flat lying to me and others. You keep telling me my ARRIS svg2482ac 1750G, is not compatible with your system ! Well answer me this ! Why does it have it listed here on ‘your’ list of approved/compatible modem/routers ? I need a good, complete explanation as to why you say it won’t work, why you have it listed as, does so I may inquire with the FCC. I am tired of all this run around. I bought the modem you told me to about a year ago, it’s been working till a few weeks ago, but, now, shows, “wifi not connected” ! Waiting for ASAP response !

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   1. Sorry, Kenneth, you might be confused. ApprovedModemList.com is a site that lists compatible modems for each ISP. This site is not Comcast. If Comcast told you to buy the ARRIS SVG2482AC, that was a big no no. The SVG2482AC contains an Intel Puma chipset which can cause connectivity issues. You can read more about Intel Puma 6 Modem List Chipset Defects at this link.

      You should contact Comcast directly or visit a local service center to hopefully help resolve your issue. At least you got about one year of service out of the device, but Comcast will probably tell you to purchase another modem. In the future, try to only buy non-Intel Puma chipset devices (avoid modems listed on ApprovedModemList.com with a black diamond ♦ next to the modem model number – do not buy).

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5. Hello,

   I love the list, but could you either add change the “X” or “check” to “No” or “Yes” or add sorting features? And add the chipset and DOCSIS 3.1 as extra columns. I am looking at various solutions for me.

   Thanks
   Mike

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   1. Sorry, Mike, more than half the visitors to this website are on mobile. Adding more and wider columns would make it difficult to read the tables on such small screens. The * symbol indicates DOCSIS 3.1 next to the modem model #. ♦ indicates an Intel Puma chipset. Everything has to be condensed to fit small screens.

      Sorting could be a feature added in the future if it can be done without hurting page load times and search engine readability. Thanks for the feedback, Mike.

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6. I purchased a roku streaming stick + and changed my Xfinity to Internet only, at 100 Mbps which is way more than I need. I’m a bit lost, in trying to determine which modem & router will best suit my needs. I will appreciate your assistance, in directing me. I am not very tech savvy, I therefore ask that you be as direct as possible, with somewhat simplified information. Thank you so very much!

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   1. Hello Tina,

      Here is your simplified solution. Purchase a NETGEAR CM500 Cable Modem ($56.10 on Amazon) and a TP-Link Archer A7 Router ($50 on Amazon). Clip both coupons on those product pages to get the sale prices. That is all you need to get your Roku up and running at not too steep of a price.

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7. I have a question you can perhaps help me with. Like Tina, I am not very tech savvy. I am buying a new vizio tv that claims to have internet capability. I believe I can simply run the cable from the modem directly to the tv in order to watch netflix. I plan to get xfinity internet-only at 200mbps. What modem will I need? And if I want to be able to have wifi in my apartment, will I also need a router? (I am sorry not to be more knowledgeable or facile with my techno-words.) Thanks!

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   1. Hello Sarah,

      Most TVs are smart TVs (they can connect to the internet). Yes, you can run an Ethernet cable (usually included with the modem) directly from your modem to your TV. If you don’t have a computer or other devices, WiFi is not needed. If you have more than one device you want to connect to the internet, then you would want a WiFi router. The modem and router you should buy are the same ones recommended to Tina: NETGEAR CM500 Cable Modem and a TP-Link Archer A7 Router.

      If you have any other questions, just ask, Sarah.

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