The 4K refers to the HDMI inputs signal only.It supports up to 4K 30Hz in and 1080P 60Hz out. Pls set the resolutions to 1080P. Supports one DVl input or HDMI input. 180°Screen Rotation: With the rotation function, you can flip the image of all HDMI outputs to 180 degree one by one, which can adjust the screens in an orientation with the thin edges, making the multiple screens more comfortable.
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