The Xfinity Arris TG1682P Prepaid Internet WiFi Capable Dual-Band Router Modem is a black unit with various ports including USB 1.0/1.1, 3.5mm jack, and Ethernet (RJ-45). This cable router modem, made by XFINITY, offers wireless connectivity through Wi-Fi 802.11ac and features a dual-band capability. With six LAN ports, this modem provides reliable internet access for multiple devices. Its compact size, measuring 3.5 inches in length and 10 inches in height, makes it suitable for home networking and connectivity needs.