The IOGEAR 8-port USB DVI KVMP Switch is a control unit that allows access and control of up to 8 computers from a single USB keyboard, USB mouse, and dual-monitor (DVI-I and VGA) console. It can be cascaded to three levels - allowing up to 73 GCS1108s to control up to 512 computers - all from the original single console. In addition, GCS1108 comes with IOGEAR's Video DynaSync™ technology to optimize the display resolution. IOGEAR's DynaSync* technology reads and remembers the monitor's parameters (EDID) so there is no delay or change of video resolution when switching between, or booting computers.