Gently used modem that I used for xfinity, but can work with other cable companies. I do not have the box or manual unfortunately. Download multiple HD movies in one minute by using this Arris SURFboard gigabit cable modem with up to 1.4GBps download speeds. This modem supports IPv4 and IPv6, the latest Internet standard, for greater connectivity and security. This powerful Arris SURFboard gigabit cable modem has 32 channels for downloading and eight for uploading. Features Gigabit Ethernet connectivity Makes it easy to link with your Windows, Mac, Unix or Linux computer. DOCSIS 3.0 technology Provides 32 downstream and 8 upstream channels, and also offers DOCSIS speeds up to 1 Gbps. LED indicators Keep you apprised of the status. 1.2GHz dual-core processor and 1.0GHz capable tuner Promote optimal performance.