two years from date of purchase

8×4 DOCSIS 2.0 and 3.0 cable modem plus a built-in N450 Single Band (2.4 GHz) Wi-Fi Gigabit Router with four Gigabit (GigE) Ethernet ports, a firewall, and more. This product is recommended for actual cable Internet service speeds up to 145 Mbps. A Broadcom cable modem chipset provides security from Denial of Service attacks.
Requires cable Internet service. Approved by Comcast Xfinity, Cox, Charter Spectrum, Timer Warner Cable, BrightHouse, WOW, CableOne, RCN, Mediacom and other cable service providers for use in modem ownership programs that save rental fees up to 132 per year. (Savings are shown for Comcast Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others. Model MG7315 has no phone jack.)
Built-in high-speed WiFi router with N450 Wi-Fi and Power Boost provides Internet access for WiFi devices including smartphones, notebooks, tablets, game stations, HDTVs, Amazon Echo, Google Home, Chromecast, Roku, Amazon Fire TV, and AppleTV. Four 10/100/1000 Gigabit Ethernet LAN ports provide wired connections to Windows and Mac computers, HDTVs, game stations, streaming TV devices, and other Ethernet-capable devices.