This ATEN KVM (keyboard-video-mouse) switch lets a single keyboard, mouse, and widescreen HDMI monitor control up to four separate computers, switching between them without needing separate peripherals or monitors for each machine. Its 'multi-view' feature goes further than a basic KVM by letting the user view multiple connected computers' outputs simultaneously in a split-screen layout on the one monitor, rather than only ever showing one source at a time — useful for IT admins, control-room operators, or anyone monitoring several systems at once. It's a hardware peripheral-sharing device aimed at desks or server rooms with multiple PCs, not a display or computer itself.