2x2 Video Wall Controlle support 1-way HDMI /DVI input and 4 HDMI Output,the main function is to divide a complete HDMI HD image signal into 4 blocks and assign to 4 video display unit(such as Rear projection unit,LCD TV,etc),Complete with 4 HDMI hign-definition video display units to form a large dynamic image screen Features: 2x2 Video Wall Controller Processor 1x2 1x3 1x4 2x1 3x1 4x1 4K HDMI video wall controller TV Video Stitching Wall Processor4K HDMI Video Wall Controller 2x2 HDMI DVI Video Multi Video Screen Processor 2x2 Video Wall Controlle support 1-way HDMI /DVI input and 4 HDMI Output,the main function is to divide a complete HDMI HD image signal into 4 blocks and assign to 4 video display unit(such as Rear projection unit,LCD TV,etc),Complete with 4 HDMI hign-definition video display units to form a large dynamic image screen Features:2x2 Video Wall Controller Processor 1x2 1x3 1x4 2x1 3x1 4x1 4K HDMI video wall controller TV Video Stitching Wall Processor HDMI Video Wall Controller: HDMI TV wall processor can distribute one HDMI or DVI input signal device (DVD, TV Box, Xbox, Roku, Computer etc.) to 4 HDMI outputs display screens simultaneously, which via LCD splicing screens can form a complete dynamic large video wall screen and digital signage displays, bring you an amazing visual experience. NOTE: Please use the Professional Video Walls instead of TVs.1080P HD Display Resolution: This 4K HDMI LED video wall controller is compliant with HDCP 1.4 and HDMI 1.4, HDMI & DVI input can support resolution can up to 4K@30Hz, including 3840x2160P @24/ 30Hz, 1920x1080P@25/ 30/ 50/ 60Hz; the HDMI output resolution can support 1920x1080P@60Hz. It also has an individual 3.5mm stereo audio and optical SPDIF port can connect to the external speaker, amplifier, sound bar etc. Please set the resolution of all screens to 1080p to ensure work well.8 Adjustable Display Modes: This 2x2 HDMI video image processor can connect up to 4 LCD TVs or other displays, which can support multiple display modes, such as 2x2, 1x1, 1x2, 1x3, 1x4, 4x1, 3x1, 2x1. All this modes provides variety splicing options, can easily switch the modes through the IR remote control without getting up or press the “Switch” key at the TV wall controller. Also support RS 232 advanced remote-control.180°Screen Rotation & Edge Mask: With the rotation function, you can flip the image of HDMI output 1 & output 2 to 180 degree, which can adjust the screens in an orientation with the thinnest edges, reduce the thick middle border. And the edge mask function can correct and align the bezels and image edges, making the multiple screens more comfortable. NOTE: 180°rotation can work only in 2x2 mode, and the output resolutions NOT more than 1080P@60Hz.Why is there no sound？ Please make sure that your input and output device is 1080P. Our product has updated the software and it can support the audio out to any kind of TV.Specifications:HDMI TV Video Wall Controller Processor 2x2 1080P 60Hz 1X2 1X4 1X3 2X1 3x1 4X1 Wall Video Controller Stitching Processor Splicer Support 1 HDMI-Compatible inputSupport input HDMI-CompatibleSupport 4 HDMI-Compatible outputsSupport 1 x 3.5mm Jack audio with 2.0CH audioSupport 1 x Optical SPDIF audio with 5.1CH audioSupport input 4K 30Hz,1920x1080P,24/30/50/60HZ,and lower resolutionSupport output resolution 1920x1080PSupport multiple splicing modes, easy to operate, plug and playMulti screen splicing "seamless mixingPorous design convection heat dissipationNon slip design is stable and non slip How I could use the 180-degree rotation on it?If you want to use the 180° rotate, there are two conditions. 1. 2x2 mode, it means you need 4 screens. 2. your input and output devices need to be no more than 1080P@60HZ. If your output devices are 4K, please adjust it to 1080P.Why is there no sound？Please make sure that your input and output device is 1080P.Our product has updated the software and it can support the audio out to any kind of TV.It does really work with the audio out.Why is the remote not work？Please check your input and output device’s resolution is 1080P. It can work properly in the resolution of 1080P.How to do if it doesn’t work with the 1x3 portrait mode？Please adjust the resolution to 1080P of the input and output device.Note that：Please use the 2x2 mode if you want to use on the game. It will show great on the 2x2 mode.Package List:1xTV Video wall controller1x DC Power adapter1xRemote control(without battery)1xUser manual