HDMI KVM Switch Dual Monitor Dual monitor KVM switch allows you to control 2 computers with one set of keyboard & mouse, share USB devices to one monitor or two monitors (Extend display mode or copy display mode). NOTE: the extended mode can output two different screens, and the copy mode can output two identical screens. Ultra HD 4K Visual Enjoyment2 port HDMI KVM switch dual monitor support input of different resolutions, such as 4K@30Hz, 1440P@60HZ, 3D and 1080P@60HZ or lower resolution. Note: if you need a 4K resolution, please use version 2.0 HDMI cable and make sure your computers and monitors support 4K! Convient Switching Modes Industry-leading technology with multiple switching modes. Panel button switch; Mouse switch (Drive-free); Keyboard hotkey switch(Drive-free); Automatic scan switch (Drive-free, adjustable interval (8-999 second)); No software is required, simply plug and play.