Allows you to select and switch between any of the 4 HDMI source devices to display on any of the 4 HDMI displays simultaneously. Easily switch between HDMI source and display using push button, IR remote control, RS-232, and Ethernet control and cloud control. Works with Amazon Alexa Echo voice control for convenient device and display switching. Supports 4Kx2K to 1080p resolution down scaling, down scaling feature detects and configures the video resolution automatically according to the capabilities of each connected monitor. Supports simultaneous mixed 4K and 1080p display outputs. Supports resolution up to 4Kx2K @60Hz YUV 4:4:4, 8bit and 4Kx2K @60Hz YUV 4:2:0 HDR 10bit. Supports default EDID and EDID learning of the connected displays. Fast HDMI link response time below 8 seconds when device switching. Supports Dolby Digital, DTS-HD and Dolby TrueHD audio. The included mounting ears allow easy and secure mounting on a wall or shelf. Metal housing provides excellent RF shielding and heat dissipation for reliable performance and long life.