I be just hope to get fewer disconnect than with my comcast supply cable modem . I be very impressed when it be finally activate -lrb- chat + call to Comcast -rrb- and I get a `` bond '' downstream connection . it also have a gigabit connection to you pc or lan which be nice but still over kill unless you can max this thing out at 160mbp . I do not max mine out but I do double my download speed and reduce my ping by 1m . I visit speedtest dot net before and after I change to this sb6121 modem . result : original Comcast Supplied Ambit U10C018 Cable Modem -lrb- Docsis 2.0 -rrb- Avg Ping - 7m Avg Download 10.42 Mbps Avg Upload 3.62 Mbps NEW Motorola SB6121 Cable Modem -lrb- Docsis 3.0 -rrb- Avg Ping - 6m -lrb- -1 m -rrb- Avg Download 20.62 mbp -lrb- +10.20 mbp -rrb- Avg Upload 3.62 mbp -lrb- +0.10 mbp -rrb- plus I can return the `` rent '' Ambit modem and hopefully shave off a few buck from my monthly bill .