The Cisco 105 DPC3939 Xfinity XB3 Dual Band WiFi Modem Router Voice Gateway is a black router designed to fit a PC. With a maximum LAN data rate of 1000 Mbps and DOCSIS 3.0 standard, it provides high-speed internet connectivity. This modem router features dual-band technology, a 4-port switch, GigE, MoCA 2.0, VoIP phone adapter, and firewall protection. It also includes both wired and wireless connectivity options, making it suitable for various devices and networks. With USB 1.0/1.1, Ethernet, and USB 2.0 ports, this router offers flexible connectivity options for home networking and connectivity needs.