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Forum Discussion
eman970
Apr 18, 2026Tutor
Have CM400 modem with upload slowdowns that happen at regular intervals
I have a CM400 modem and lately I have experienced a slowdown of only my upload speed starting at a specific time of day between 7:30pm and 8pm for the past week. My upload speed goes from 30mbps bef...
eman970
Apr 19, 2026Tutor
My ISP is Xfinity/comcast.
Not sure what you mean by 'fully support'?
by 'connection status and event log page' I'm not sure how to get that. I have a couple friends who are more computer minded than I am so I'll get back to you with that info. I went to the second link you posted above AND '192.168...' link does not open because all my browsers call it a security risk.
FURRYe38
Apr 19, 2026Guru - Experienced User
You'll need to access the modems web page to gain access to the cable connections and event logs page.
Please allow the browser to access the web page. It's ok too.