Fast 24x8 DOCSIS 3.0 cable modem with AC1900 dual-band Wi-Fi (2.4GHz & 5GHz). Includes 4 Gigabit Ethernet ports, Power Boost amplifiers, and firewall security. Supports speeds up to 1000 Mbps (modem) and 650 Mbps (service). Save up to $156/year on modem rental fees (based on Comcast Xfinity; savings can vary). Certified for Comcast Xfinity, Cox, Charter Spectrum. Not compatible with fiber, DSL, or satellite services. Residential use only. Check ISP requirements before purchase. Built-in AC1900 Wi-Fi router with Power Boost for smartphones, laptops, tablets, and more. Four Gigabit Ethernet ports for wired devices. Does not support home telephone services Wireless Power Boost amplifies Wi-Fi signals to the legal limit for better speed and range. AnyBeam technology on 2.4GHz & 5GHz focuses signals on connected devices for improved performance and coverage. Technical support available via phone, chat or email. Please contact us for any issues with connecting to service.