2x2 Video Wall Controller with Input USB+HDMI+VGA+AV and TV HDMI Output, Fully-Digital Processing Channel Inside 180 Degree, HD LCD Splicing Screen Seamless led TV Wall Monitor Display 1x3 1x4 2x1 1x2 Quad-screen processing supports 4-way HDMI output signal, connected to 4 LCD TV or other display devices such as projectors, DLP, plasma and other display unit input signal Supports 1 composite video, 1 VGA, 1 HDMI, 1 USB four signal inputs totally, HDMI and USB signal interface with audio decoding, composite video and VGA signal plus the corresponding audio binding interface, all the input video signal can achieve synchronized output switching with audio. MirroringCompared with ordinary video wall controller, RIJER RJ4BOX contain 180-degree image flip function for each screen Various control port---RS232 Remote controller;HDCP compliant---HDMI 1.3, HDCP protection.Attention: 1x2 1x3 1x4 Screen,It must be Vertical Screen. Fully-digital processing channel insideBuilt-in conversion for analog/digital, interlaced/progressive, resolution, aspect ratio and refresh rate <span class="a-text-bold">Quad-screen processing:</span> Supports 4-way HDMI output signal, connected to 4 LCD TV or other display devices such as projectors, DLP, plasma and other display unit. <span class="a-text-bold">Various control port---RS232:</span> Remote controller;HDCP compliant---HDMI 1.3, HDCP protection. <span class="a-text-bold">Fully-digital processing channel inside:</span> Built-in conversion for analog/digital, interlaced/progressive, resolution, aspect ratio and refresh rate. The RJ-4BOX 2x2 Video Wall Controller<span class="a-text-bold"> output HDMI interface</span>,resolution is 1080P or 720P or 1024*768, chose by user. 5,Remote control The<span class="a-text-bold"> remote control </span>specially customized for  RJ4BOX, all functions correspond with it&#039;s buttons exactly. All functions can be done on the remote control like settings, switching, adjustable, and use ultra-sensitive design, remote control distance up to <span class="a-text-bold">7-10 meters</span>. <span class="a-text-bold">U disk play</span> Our products enable USB playback and stitching. After the basic functions of LCD splicing, users achieve simple video or picture format stitching playback, on the USB interface of our products just need to insert a U disk, no need to configurate a computer or other playback devices, simple and practical. USB can support a number of popular video, pictures, MP3, TXT documents; it can support the selected video or all Play; It can support all video round robin play, pause, fast-forward, the program list and other functions;