The Arris SURFboard Cable Modem & Wifi Router SBG67000-AC is a pre-owned device that combines a modem and router in one, providing high-speed internet connectivity for home or small business use. With its DOCSIS 3.0 standard and ARRIS brand, this modem is designed for reliable performance and efficient data transmission. The SBG6700-AC model offers both modem and router functions, making it a convenient and effective option for those looking to streamline their networking setup.