This Delock DVI switch is a manual bidirectional switch for connecting various devices with a DVI connection, offering two different usage options. You can connect two computers with DVI outputs to one monitor, TV, or projector with a DVI input. With the push of a button, you can select which device will display the signal on the screen. Alternatively, you can connect one computer with a DVI output to two screens and choose with a button which screen will show the signal. Simultaneous output on multiple screens is not possible. Delock DVI switchbox, manual, 2 PCs to 1 monitor or 2 monitors to 1 PC, DVI 24+5, button for manual switching. No cables are included.