With NÖRDIC SGM-154 HDMI 4Ports switch, you can share two screens with four HDMI video sources. The switch has four independent entrances which each support 4K resolution and 5.1 audio sounds. The switch is backward compatible with high resolution 1080p, you can ensure that all video sources look good in your digital sign application.In addition, the sound that is embedded in HDMI can be extracted via Toslink or COAXIAL and the switch can return the sounds to AV receivers with the ARC function (AUDIO RETURN Channel). The switch is powered by the supplied DC5V AC adapter. The switch has manual control and remotely control it can be possible for the latest activated video source to display automatic support for different audio output simultaneously: Stereo, Toslink, Caaxial, RCA L / R and 3.5mm stereo support for resolution up to 4K @ 60Hz support for 600 MHz 6 Gbps per channel 18 GBPS All channels bandwidth support for 12 bit per channel (36 bit All channels) deep color support for HDCP2.2 support for HDR10 support for uncompressed sound as LPCM 7.1 support for compressed audio such as Dolby Digital, DTS-HD Master Audio and Dolby Truehd, Dolby Audio Return Channel ARC ATMSupport Content: Switch, Remote Control, DC 5V Power and Manual