This 4K 2x2 video wall controller is a video converter that splits a full HDMI or DVI high definition image signal into four displays and assigns them to four video display units (such as rear projection, splicing screen, LCD TV, monitor, etc.). Equipped with 4 high definition HDMI video display units, forming a large dynamic image wall This 2x2 HDMI video image processor supports HDMI and DVI input; HDMI 1.4 input supports up to 3840x2160/30Hz (backward compatibility), and HDMI output supports up to 1920x1080P@60Hz resolution When in 2X2 mode, the overall output resolution can reach 3840x2160/60 Hz Hz This 4K HDMI LED video wall controller supports all 2x2, 1x3, 1x4, 4x1, 3x1, 2x1 splicing modes and 1x1 splitter modes. 180° Screen Rotation & Edge Masking - Due to physical gaps in the contour of the monitor, the image may appear visually stretched and look very unnatural. Through the processing of the edge mask, the image will not deform or iron, making it more natural and realistic. (The screen rotation of 180° is usually used in 2x2 mode) 【Independent Audio】 The HDMI 4K 2x2 video wall controller supports a separate 3.5mm stereo audio port, which can be connected to external speakers, amplifiers, speakers and more. When not connected to external audio, you can also input and stream screen voice here (if the output device supports external audio)