The VS-121HC is a 1U rack mountable device that can switch and transcode between 4 composite video inputs, 4 S-video inputs, and 4 component video inputs to output 2 identical component video signals. It can switch between the different input formats and also transcode composite and S-video inputs to component video. It has front panel and remote control via RS-232, RS-485, Ethernet, and IR, and can operate in tandem with the VS-121HCA unit.