This is an Xfinity Arris XB3 DualBand Wifi Router and Cable Modem in Black. It has a maximum LAN data rate of 640 Mbps and features dual-band capability. The modem device type is Cable Modems & Routers, with 4 LAN ports for connection. The model is TG1682G and it is designed for use with Xfinity. The item measures 11 inches in length, 11 inches in height, and 4 inches in width.