2x2 HDMI Video Wall Controller, 4Kx2K HD Seamless Splicing Professional Processor with HDMI+DVI+RS232 Input, 4 Way HDMI & SPDIF Output 180 Degree Rotate TV Wall Display 2x2, 1x2,1x3,1x4,2x1,3x1,4x1

Input & Output Support: Supports HDMI/DVI/RS232 input. You can also play and stitch various videos, pictures, mp3, and documents through the USB interface, support video pause, fast forward, loop playback, program list and other functions, and support the playback of rolling subtitles.
Multi-splicing Modes: Our video processor can output from 4 channels, support multiple modes display 2x2, 1x2, 1x3, 1x4, 2x1, 3x1, 4x1. Suitable for LCD TV, projector, DLP, plasma display, etc.
HD Display: The video wall display has the AUDIO own audio decoding and separation output port, which can be connected to audio, Input devices can support up to 4k, but output devices up to 1080P, restore the original appearance of the image, and present a natural and complete picture, no details are missed, and the colors are real and clearly visible.
180 Degree Flip: In 2x2 mode, the TV wall processor also has the function of 180 degree mirror flip per screen, which greatly reduces the LCD splicing gap.