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11/12/2026 2:59 AM

Cable Modem Upgrade

Recently, when I logged onto Amazon.com, a pop-up message told me that my device (a DOCSIS 3.0 Cable Modem) is no longer supported. I MUST get a device that is compatible. (I presume that this would be a DOCSIS 3.1 Cable Modem.) The next day, XFinity sent me an E-mail message, informing me that I must upgrade my cable modem for performance, reliability, and security improvements. It directed me to a product page offering new modems for over $400.

I don't have $400 to throw around. So, I went back to Amazon.com and searched for more affordable cable modems. I found loads of the DOCSIS 3.0 products still being sold. Some of them were on sale.

Question:  If XFinity is telling me that it's important to upgrade, why are stores still selling the older generation of products? 

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Official Employee

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2.7K Messages

9 hours ago

Hello @user_0jvumi, Thanks so much for taking a moment out of your day to leave a post on our community forum, and we would be happy to help. You can find all compatible modems here: Find other modems that work with Xfinity services and then scroll down to "See all modems," and it will give you a whole list of support devices. 

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