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Forum Discussion
Xfinity -- I bought the DOCSIS® 3.1 Cable Modem (CM1000)
I'm frustrated too, I bought the DOCSIS® 3.1 Cable Modem (CM1000) in 2019 for $200 and it's still selling for the same price at 2022 and advertises as compatible with xfinity comcast internet servic...
Comcast is the one who sets the compatibility.
But I can confirm it still works and works fine. I have one and recently hooked it up for some testing. The reason we're seeing them say it doesn't is they upgraded many customers to the 1.2 gig service.
The CM1000 only has 1 gig ports so according to comcast, it isn't compatible with the service since it can't hit the 1.2 gig speeds. But it still works fine. You just only get 1 gig service and not the 1.2 they upgraded people to.
So basically ignore it. Your modem still works fine. Comcast is just great at trying to push people to upgrade
Comcast is playing fast and loose with the definition of compatible. The only reason your modem went from compatible to non-compatible is because Comcast changed the boundaries. Your CM1000 still works fine and will connect to the Comcast network.
Previously your pay tier had max 1 Gbps throughput and your modem has a 1 Gbps output port. Comcast increased the pay tier maximum to 1.2 Gbps and your output port hardware stayed at 1 Gbps. If the owners of modems with 1 Gbps output ports are frightened into renting modems from Comcast, Comcast thinks that is OK
Another piece of this story, most end users have local area networks with piece parts that have 1 Gbps ports. Plus, very few of their activities would saturate a 1 Gbps connection.
Comcast makes the list, they have the option to stop supporting modems that do not support their full service throughput. That could very well mean no firmware updates.