I have broadband from Comcast and I have zero issue set the modem up with they . it connect right away and the Comcast technician over the phone be able to activate my internet almost instantly . I live in San Francisco and with this Modem and Comcast I be basically get the full 20mb connection , streaming be almost always perfectly smooth from Netflix . do not have any issue set this up with my Apple Time Capsule either . 5 star !