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This professional 4-in-2-out HDMI matrix follows HDMI2.0b specification with full HDCP2.2 certification at 18.5Gbps bandwidth. Four source devices connect to two display terminals with arbitrary signal distribution: two screens can play different sources synchronously or mirror identical video as needed. Equipped with two independent optical SPDIF digital audio and two 3.5mm analog audio outputs, it supports two separate audio systems simultaneously without occupying HDMI output channels. It fully supports 4K@60Hz, HDR10 and 3D video formats, compatible with mainstream surround sound decoding. Users switch input channels via included IR remote or onboard physical buttons easily without extra software installation. Great for family home cinema, office conference projection and multi-console gaming station.