The Motorola MT7711 combines an ultra-fast DOCSIS 3.0 cable modem + AC1900 WiFi router + 2 phones lines for use with Xfinity Voice service only. Certified for Comcast Xfinity Internet and Voice service and recommended for cable internet plans with speeds up to 600 Mbps. Features 4 Gigabit Ethernet ports for wired connections. Delivers up to 1900 Mbps wireless speed. Power Boost, Range Boost, and AnyBeam WiFi beamforming enable quality streaming, gaming, and connecting throughout the home. Enjoy crystal-clear calling and enhanced features like caller ID, call forwarding, conference calling, and more. Save up to $168 per year on cable modem rental fees (savings described is for Comcast Xfinity service). Comes with a 2-year warranty and free support from our USA team of connectivity technicians. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non-Xfinity voice services.