1、SOUND FORMATS: Video wall controller supports PCM 0 sound format, not supported for Dolby Digital and DTS. Sound does not pass through the monitor and external sound system, if a sound output is required, then speakers or bar speakers are required. 2、SUPPORTED RESOLUTIONS: Video wall processor input compatible with HD multimedia interface 4 and HDCP 4, input video resolution: 1920x1080P 25 30 50 60Hz, 3840x2160P 25 30Hz. output resolution: 1920x1080P 25 30 50 60Hz 60Hz. 3、180 DEGREE SCREEN ROTATION: HD multimedia interface video wall controller has a rotation function to flip the image of HD multimedia interface output 1 and output 2 by 180 degrees, which can adjust the screen to the direction of the thinnest edge and reduce the middle thick border. 4、EDGE MASK FUNCTION: HD multimedia interface video processor has an edge mask function that corrects and aligns borders and image edges to make multiple screens more comfortable. Support 8 display modes, supporting 2x2, 1x1, 1x2, 1x3, 1x4, 2x1, 3x1, 4x1, providing diverse display options. 5、EASY TO OPERATE: HD multimedia interface video splicer is plug and play, no driver installation required. Supports 1 HD multimedia interface or DVI input and 4 HD multimedia interface output signals to connect four LCD TVs or other display devices such as projectors, DLP, plasma and other display units. 1 x Video Wall Controller1 x Power Adapter 1 x Remote Control1 x Manual Item Type: Video Wall ControllerMaterial: Aluminium AlloyModel: HDVW2x2 EResolution: 1080PPlug Voltage: 100‑240VRemote Control Battery: 2x AAA (not Included)