I be use this modem with Comcast service . the setup be very easy , although in typical isp fashion the guy on the phone have no idea be be go on . I be able to set up the router with just a phone call , although they make I purchase they ` self-installation kit ' for $ 10 -lrb- I never recieve the kit in the mail -rrb- . but enough rant about Comcast , the modem itself seem to be work very well . I have not experience any drop in service and my speed appear very consistent . I have not do any investigation into my actual speed yet , but everything feel as quick as I would expect from a Docsis 3.0 modem . all in all , I be very satisfied with my purchase , provide it last a few year .