great modem , come fast and be easy to install . I call up comcast and give they the MAC to provision it , but they say it would take up to three day . for instant satisfaction , I tweet that comcast customer service suck . a rep reply and ask to help . I direct message he with the account number and MAC , and the box be provision within minute . long story short , get the thing run within the first hour I have it and it be a perfect replacement for the crap smc gateway device Comcast usually require -lrb- and charge $ 7\/m for -rrb- .