I be write this in late December , have purchase the unit in September . I 'll put this review in three section : the good , the bad and `` the neutral '' -- the good -- once it be set up I really have no complaint . I purchase a combo cable modem\/switch\/broadband router with wifus and that be exactly what this unit be and do rather effectively . since I buy this unit at the same time I sign up for the comcast account I have nothing to compare it to . my main computer be also connect through a `` ethernet over powerline '' set of adapter which add several m of latency so I can not even comment on that . both wire and wireless connection have be nothing but stable as long as I have have it . my apartment be small so it be not difficult to blanket it with wifus signal . I do not have a 802.11 n device so I can not comment on that . I have a roku box connect directly to the unit and it very rarely if ever drop off . when it do I know it be either comcast or netflix with the issue -lrb- s -rrb- . this unit do seem to have a incredible list of feature built-in . it be like the manufacturer just go through a long check list of every feature imaginable and dump it in . I have only barely scratch the surface on all the feature either because I do not need they or because I could not figure out how to set it up -lrb- see the bad -rrb- . I find out later it be fact possible to use this unit soley as a cable modem , bypass the nat\/router functionality . -- the Bad -- if you ever want to actually use this device for anything outside of the default functionality put on you googling hat and get ready to spend some time : it be quite difficult to figure out what anything be just from the interface and the pdf manual have very minimal explanation of even what the various abbreviation mean never mind how to set they up . for instance I want to utilize the `` guest wifus '' feature so I could set up a old pc with a wifus card that do not support WPA -lrb- I want a wep along side my primary wpa network -rrb- . it be not that critical and I do not want to spend very much time on it but I could not seem to set this up . I be sure if I have spend several hour search the internet and experiment I could have come up with a solution . but this should not be necessary . either the uus should be intuitive enough to set it up , it should be document how to set it up step-by-step or at the very least there should a link some where on Zoom 's site to a third party site that describe how to make it happen . the same go for use this unit purely as a cable modem so I could use my own preferred broadband router -lrb- a linksy with tomatoe firmware -rrb- . I browse the various setting , look up abbreviation in wikipedium . then I google those abbreviation . eventually I find the setting and successfully set up my seperate router -lrb- I find the real solution on a random blog talk about a different modem ... -rrb- . this should not be necessary and be not something 99.99 % of costumer be go to bother with . -lrb- the setting be call `` RgPassThrough '' . recommend disable of wifus , dhcp and NAT , and put the MAC address of the router you want . I never would have guess `` RgPassThrough '' . -rrb- I would also mention the apparent lack of any way to update this modem 's firmware . perhaps this be a regulation put on they by the cable industry but it just seem inexcusable to I in this day and age of network exploit and malicious bot roam the internet . -- Neutral -- since I do not know who be at fault for this issue I be not blame the modem directly : it take more than a hour and at least two different comcast representative to successfully activate this modem . there be only so much the representative could tell I but it sound like it just do not want to talk to comcast 's end . the activation be attempt over and over again for 45 minute or so before it finally just inexplicably start to work . the representative have no explnation . I later attempt to activate a different Motorola modem at the same location and have the exact same issue which lead I to believe it be not the modem but rather the cabling or whatever software\/hardware comcast have on they end . it be very , very frustrating -lrb- never do get the second modem to work -rrb- . once the zoom be activate it could deactivated\/activated instantly with no issue . it be just that initial attempt that be time consuming . again , this could be unique to my region and\/or my particular comcast office for all I know . I live in northern California just outside of Sacramento . -- conclusion -- I be give this device four star for the lack of documentation and non-intuitive web interface . I like the list of feature and as far as I can tell be very effective as a cable modem\/broadband router .