The Cisco AT&T U-verse VDSL401-AT ADSL/VDSL Modem Router in black offers high-speed internet connectivity with a maximum downstream data rate of 24 Mbps and a maximum LAN data rate of 100 Mbps. This modem router, designed by Cisco and certified for AT&T's U-verse service, is compact in size with dimensions of 9.0 inches in length and 6.0 inches in height. It features one Ethernet LAN port and is ideal for connecting to a PC for reliable and fast internet access. With its VDSL technology and DOCSIS standard compliance, this modem router provides a reliable and efficient network connection for home or office use.