This is a 4 in 4 out HDMI matrix switch, it can switch 4 HDMI input signals to 4 HDMI displays as needed. It supports up to 4096x2160@60Hz HDR UHD resolution, and a variety of switching methods (IR remote control, buttons and RS232). The device has 4 HDMI input and 4 HDMI output interfaces, with a transmission rate of 18Gbps and a bandwidth of 600MHz. It also supports various audio formats, including LPCM7.1, DTS-HD, DTS-Audio, Dolby Digital plus, Dolby TrueHD 7.1, and Dolby Atmos. The package includes the 4x4 HDMI matrix, remote control, and manual.