Are there any 2.5Gb modems that don't come with routers and wifi?

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The original was posted on /r/homenetworking by /u/Tactilebiscuit4 on 2023-12-07 01:58:03+00:00.

I currently pay for 1.2 Gbps through Xfinity but am using a Gigabit Modem. It's a great modem with a single port that I just plug into my Pfsense router. However, I want to take advantage of the extra 200Mbps. Every modem that has a 2.5Gb port I look at comes with Routers, multiple ports, and Wifi built-in. I had an Arris G36 that I was using before that had a 2.5Gb port, but something was wrong with it as it would randomly drop my connection. Is there any modem out there that just converts without the extra fluff?