Automatically switch between two video sources on two displays with fast switching for minimal video disruption 4K 2x2 HDMI Matrix Switch UltraHD 4K with fast switching and auto-sensing 4K HDMI matrix switch with remote control switching 2x2 matix switch with UltraHD 4K support RS-232 serial control interface- Versatile audio configuration with support for 5.1 or 7.1 surround sound Support for EDID copy ensures accurate display output Backward compatible with high-definition 1080p