MBAG-312, a 2 Ports Full-Screen PBP 4K HDMI KVM Switch with Mouse Roaming function, allows users to operate 2 computers simultaneously. User can connect 2 computers to this Full-Screen PBP KVM Switch and display the sources on one or two monitors with full frame (full screen). (The Full-Screen PBP function means the PBP video images can be displayed in full screen on the monitor without any black borders and distortion)