1x2 1x3 1x4 2x1 3x1 4x1 2 3 4 TV Splicer Video Processor. 2)The 4K refers to the HDMI inputs signal only.It supports up to 4K 30Hz in and 1080P 60Hz out. a complete HDMI HD image signal into 4 blocks and assign to 4 video display units (such as rear projection unit.
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