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Forum Discussion
dannoz
Jun 18, 2025Aspirant
CM3000 Comcast Business Slow Upload
 Using the Comcast provided modem I get > 300 Mbps upload.  Changing to the CM3000 I get 30.     I've spent hours with Comcast tech support and had multiple technicians out.     Thoughts?     Cable Di...
Kitsap
Jun 18, 2025Master
For Comcast Business accounts, there is a chance the CM3000 has not been certified for connection to the Enhanced Speed Network.
Make a Technical Support post over on the Reddit Comcast_Xfinity forum and they should be able to give you an answer. https://www.reddit.com/r/Comcast_Xfinity/