This four-port switch is available in Multiscreen, DVI or DisplayPort variants; Access multiple applications: allow one display, keyboard and mouse to switch control between up to eight computers; Fluid and Reliable USB Switching: Adder’s USB True Emulation ensures fast and reliable switching. Extended DDC EDID profile ensures that the graphics card is always optimized to work with your screen; VGA capabilities enable users to work at very high resolutions including WUXGA (1920 x 1200) or (1920 x 1440); USB 2.0 enables connection to any USB human interface device from mice and keyboards through to graphics tablets, jog shuttles, joysticks and 3D explorers; Switching options enable the operator to use the keyboard and mouse on one computer whilst the USB peripherals are connected to other ones; Switch using selectable keyboard hotkeys, three button mice or the front panel controls, or add a RC4 remote; A range of USB devices can be connected, including printers, scanners, and non-standard human interface devices; ‘Options’ port for control, synchronisation and upgrade: port allows remote switching using simple ASCII codes; units to be switched in synchrony to create a multi video head switching system; and firmware upgrades, all through the same port.