KVM Extenders encompass analog or digital video extension and control signals in a single KVM Extender product. The AdderLink KVM Extender range includes DVI Extenders, HDMI extenders and Displayport extenders all including USB Extenders. The range also has stand alone analog VGA Extenders, HDMI Extenders, DVI Extenders and legacy PS/2 Extenders. A transmitter or encoder is placed at the computer and a decoder or remote user station is placed by the monitor and control devices, e.g. keyboard, mouse, touch screen, graphic tablet or other USB device. These are connected together by means of a twisted pair copper (referred to as Cat X) or fibre optic cable. Distances supported are from 10 Meters to 10 Kilometres.