arris surfboard (16x4) docsis 3.0 cable modem plus ac1900 dual band wi-fi router, 686 mbps max speed, certified for comcast xfinity, spectrum, cox & more (sbg6950ac2-rb) renewed arris security, mcafee secure whole home internet with app to monitor and configure. support for multicast ip services also is backward compatible with docsis 2.0 contact your cable service