4-Port Quad-View HDMI Mouse Roaming KVM. Easily control/switch 4 HDMI computers or devices to 2 HDMI displays/monitors with one set of keyboard & mouse in Full screen or Quad view screen mode for increased productivity. Effortlessly Switch. Easily switching between four computers/devices via the front panel push button, USB keyboard hotkeys, IR remote control, web GUI control, and RS-232 command make this 4K60Hz Quad-View HDMI Mouse Roaming KVM Processor user-friendly to operate. Mouse Roaming Function. Simple move the mouse to roam between the four Windows or Mac Systems make perfect operation experience. 5 Display Modes. Video screen layout includes Full screen (original), Dual mode (left/right), Quad mode (average of 4), Quad Cycled mode 1 (1 big/ 3 small), and Quad Cycled mode 2 (1 big/ 3 small) with resizing, position, zoom, pan and blend functions. TAA Compliant. Completely manufactured in a TAA designated country