The ARRIS TM822R SURFboard mAX is a high-speed cable modem and voice modem designed for Xfinity users. With a maximum downstream data rate of 343 Mbps and DOCSIS 3.0 technology, this modem provides fast and reliable internet connectivity. In black color and featuring unlocked capabilities, it is suitable for home networking and connectivity needs. This modem is specifically designed by ARRIS for use with Comcast Xfinity, offering a seamless and efficient internet experience for users.