this be my first docsis3 wireless cable modem and have it install by the Comcast serviceman . I have earlier set up the router off line for wire and wireless functionality . the direction be easy to follow for set security and the various network . I like the ability to have a private network and a guest access point . speed test show over 30 mb download and 5 mb upload , however this change from day to day . the installer have never see over 3 mb upload speed . I have no issue with strength of signal . Modem be on a ground level floor and signal easily reach the second floor . other have comment on the heat this modem generate , I have the same experience , it simply run hot . there be a power adjustment that seem to allow the unit to run on 25 % , 50 % , 75 % and 100 % power setting . I will try the 75 % set to see if it run cooler without any loss in wireless signal or speed . I have a older docsis2 surfboard run on Wideopenwest service for a couple of year now with no issue . much more stable than my older two unit system have a separate modem and wireless router . my it friend recommend seperate unit , but I have have a good experience with the combined modem . give the cost comparison , this one win .