
I can only say this about Comcast, I don't know if Cox or other ISPs have this issue. This modem/router has problems that Comcast cannot fix. Connection issues, lag, stuttering, huge errors, all on gigabit. I had Comcast to check all the cables in my house and I have a very good connection with almost no interference as I'm the only one connected to the mast. Worked with Netgear staff who only applied fixes based on small changes in settings. Communicating with Comcast and Netgear was a waste of time and money. Comcast reps casually told me that even with a perfect connection, Netgear routers seem to suffer from connectivity and speed issues. I've tried EVERYTHING to make this work properly. Netgear will only send you a replacement and will not refund your money unless you buy directly from them! If you decide to purchase this modem router combo and you have problems like mine, please return it asap.

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