DP Port KVM Switch This is a perfect KVM switch for DP port devices to share keyboard, mouse and monitor together. In copy mode, the main screen can be copied to the second output screen. In expansion mode, the window can be drawn from the main screen to the second output screen. Supports 2 switching modessupports physical buttons and wired control. Only if your computer supports dual display or multi-display, you can use this DP KVM switch to achieve two computers share two monitors together, please choose the advanced mode or copy mode in your computer. Mac M1 does not support advanced display.