ARRIS SURFboard SBG6580 DOCSIS 3.0 Cable Modem/ Wi-Fi N300 2.4Ghz + N300 5GHz Dual Band Router - Retail Packaging Black (570763-006-00) Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Call internet service provider if not listed here. Requires Cable Internet Service and approved for plans up to 100 Mbps. Wifi will not work on certain ISP providers Not compatible with: Verizon, AT&T, or CenturyLink Two-in-one DOCSIS 3.0 Cable Modem + N300 WiFi Router Docsis 3.0 Modem with 8 DOWNLOAD and 4 UPLOAD Channels capable of 343 Mbps download and 131 Mbps. 8X Faster than DOCSIS 2.0. Supports IPv4 and IPv6  the latest Internet standard. 802.11n Wi-Fi. 4-Port Gigabit Ethernet Router 2.4/5.0 GHz Dual-band Switchable