· 3 products in 1: Cable Modem, AC1900 Dual band WiFi and 4 Port Gigabit Router· Requires cable internet service. Compatible with major U.S. Cable Providers like Xfinity, Spectrum, Cox, Suddenlink, Mediacom, etc. Not compatible with ATT, Verizon or CenturyLink.· 16 DOWNLOAD & 4 UPLOAD channels to maximize your Cable ISP service offerings. . Recommended for plans of 300 Mbps and below· AC1900 2.4/5.0 GHz Dual-band Concurrent Wi-Fi Router with 4 Gigabit Ethernet ports. Wi-Fi beamforming – max coverage and performance· 90 Day Warranty. ARRIS Certified Refurbished. US Technical support