The Netgear CM400 High Speed Cable Modem is a black modem device type that operates at a maximum downstream data rate of 340 Mbps. This cable modem, made by NETGEAR, is designed for high-speed internet connectivity for home networking and computer/tablet use. With a maximum LAN data rate of 340 Mbps, this model is ideal for households or small office settings that require fast and reliable internet access.