The Arris Surfboard SB6121 Docsis 3.0 Cable Modem is a high-speed modem designed for home networking and connectivity. With a maximum downstream data rate of 160 Mbps and a maximum LAN data rate of 1000 Mbps, this modem provides fast and reliable internet access. The modem is refurbished with power, ensuring it is in good working condition and ready to be used. Its black color and wired-ethernet connectivity make it a sleek and efficient option for home internet connections.