LED Video ProcessorChina 4K Video Wall Controller 2X2 1X2 2X1 1X3 1X4 HDMI Video Processor 180 Degrees Rotation with Remote Control, Find details about China Video Wall Controller 2X2, Video Wall Controller 4K from 4K Video Wall Controller 2X2 1X2 2X1 1X3 1X4 HDMI Video Processor 180 Degrees Rotation with Remote Control