HDMI Matrix can connect up to 4 HDMI Source to 2 HDMI Display terminals with Audio Extractor Function and ARC function with Toslink SPDIF port, coaxial port, 3.5mm Aux port. Please Note： ARC Function and Audio Extractor only supports Output A port. | 4K@60Hz, 4K HDR, 3840x2160@60Hz, Ultra HD, 3D, RGB 4:4:4. Support 18.5Gbps data rate and tmds clock up to 600Mhz. Support deep color 8/10/12/24/32/48bit. It supports HDCP 2.2, HDMI2.0b, 4K@60HZ, RGB4:4:4, 4K HDR | Supports LPCM/ Dolby/ DTS 5.1 channel and smart EDID management. Any input HD source can do audio extract by the SPDIF or 3.5mm headphone audio output port separately. Built-in IR sensor comes with a handy, intuitive remote control that makes switching inputs, it can do also switch by press button. ARC function achieve audio return. And Only Output A Supports ARC. Note: 3.5mm port not support ARC function and TV HDMI port need to support ARC | Support HDCP 2.2, compatible with HDMI 2.0b. Input support: Computer, PS3, PS4,PS4 pro, Xbox, Xbox one, HD player, Fire TV, Apple TV etc. Output support: Projector, HDTV etc. | Friendly and easy-to-reach customer service to solve your problems timely. If you have any problems, Please contact us we will slove immediately.