The 1x4 DVI Monitor Switcher works in reverse from Gefen's other switchers: it connects one high definition digital video source to four digital video displays one at a time. You switch to whatever display you want to view at any given time. It's ideal for environments that need to assign a main video source to several different displays, such as the home, office, recording studio or industrial complex that needs video in different rooms or at different desktops. Beautiful high definition resolutions are sustained on all monitors at all times. Monitor selection is done via the IR remote control that comes with the unit. HDMI can also be accommodated using HDMI to DVI adapters.