The MOTOROLA ARRIS SURFboard Modem 200 Series Model SB6121 is a brand new, sealed cable modem that operates at a maximum downstream data rate of 172 Mbps. It is designed with DOCSIS 3.0 standards in mind and includes one LAN port for connecting to your router or other devices. The modem is black in color and manufactured in China by Motorola. Specifically designed for use with Spectrum, this modem offers reliable and high-speed internet access for your home or office.