Wired modem only, Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm. Note: does NOT include WIFI Router or VOIP Telephone adapter Compatible with major U.S. Cable Providers like Comcast, Cox, Charter, Time Warner, etc (NOT compatible with Verizon FiOS or AT&T U-verse). Supports IPv4 and IPv6 - the latest Internet standard It harnesses the power of DOCSIS 3.0 technology to bond up to 8 downstream channels and 4 upstream channels - providing you advanced multimedia services with data rates up to 343Mbps download and 131Mbps upload depending on your Cable Internet provider service Brown Box Models Not Valid for This Item When Sold As New, Should Report to Amazon Immediately and Return to Seller. Please Note : Kindly refer the User Manual before use. 2 year warranty with US based customer service. Building upon the success of the SB6121, Motorola's SURFboard SB6141 enhances your personal media experience, at lightning-fast broadband speed. It harnesses the power of DOCSIS 3.0 technology to bond up to eight downstream channels and four upstream channels--providing you advanced multimedia services with data rates up to 343 Mbps download and 131 Mbps upload depending on your Cable Internet provider service. That makes streaming HD Video, gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications far more realistic, faster, and efficient than ever before.