this be a Comcast approve modem . it be rate the maximum star -lrb- 3 -rrb- by Comcast . be very easy to setup , Comcast take only minute to activate it . I highly recommend this modem , run fairly cool . why pay Comcast for a lease modem . I lease my modem for 5 year , @ $ 7.00 per month , I could have purchase one new modem per year at that rate . the one thing Comcast do not tell or do for customer , the modem we lease be never update to the newest and greatest , so with the older modem you never keep up with the speed available to customer . I highly recommend this modem !!