The Arris Motorola SBG6580 SURFboard eXtreme Wireless Cable Modem & Gigabit Router is a high-speed device that combines a cable modem and a router into one unit. It supports a maximum downstream data rate of 343 Mbps and a LAN data rate of 343 Mbps, making it suitable for fast internet connections. With dual-band wireless connectivity and 4 LAN ports, this modem-router combo offers flexibility for wired and wireless connections. It is designed with DOCSIS 3.0 standards and features a 4 Port Switch for enhanced networking capabilities.