Just received. Plugged in and called Comcast and it works with no problems. Comcast was very efficient. All this took about 20 minutes from opening the package to connecting to the network. The only annoyance was that I use Linux. I restarted windows and tried to run the setup wizard but that did nothing and did nothing. The problem is not with Linux. It loaded into Windows for no reason, which was annoying. You don't need Windows to run this thing. All you have to do is read the user manual which is easy to find on the CD. A WARNING. "Modems are sometimes ambiguous and/or used by someone else on their system. I don't know if that's true. Just pass it along.=============Update 2021 February = == ======Still using this modem, no problem.
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