Maximum download and upload speed of the cm1200 cable modem?

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yasirfaheem wrote:

What is the maximum download and upload speed of the cm1200 cable modem?  I have Comcast and am paying for 800mbps download and 100mbps upload.  When I have the cable modem connected directly to my computer and run a speed test I get 950mbps download and 25mpbs upload.  I can never get the full 100mbps upload that Comcast says I should be getting.

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Using your CM1200, you will not see the 100 Mbps upload on the Comcast Enhanced Speed network.  The CM1200 is not on the Comcast list of certified customer owned modems allowed to connect to the Enhanced Speed network.  For the current list, see the attached screen snip.

For further details, refer to the Comcast_Xfinity sub-forum on Reddit here:

https://www.reddit.com/r/Comcast_Xfinity/wiki/knowledgebase/next-generation-internet/.