Black Box’s ServSwitch Agility is KVM Over IP

According to Black Box, its ServSwitch allows the use of an existing network to extend keyboard, video, and mouse (KVM) signals, as well as digital video. It extends DVI, USB and audio signals over IP, with maximum range determined by the network thus, it doubles as a KVM switch and a digital signage extender.

In addition to standard point-to-point KVM communications, the Agility supports multicasting of video and audio over an IP network. From the Agility receiver, you can change channels to switch DVI, audio, and USB connections to any equipped destination on the network. It also supports single-target sharing, where multiple users share a single remote computer.

More specs are here: http://www.blackbox.com/Store/LP/Servswitch-Agility.aspx