HH1 About this product: 【4-Channel Splicer】The video wall controller distributes one HDMI/VGA input (PC, laptop, computer, set-top box, DVD player, PS3/4, etc.) to four HDMI outputs (LCD TV, rear projection unit, monitor, etc.). At the same time, it can create a gorgeous large video wall or digital signage display. 【Enjoy 4K@30Hz HD】The HDMI video processor supports 3840*2160@30Hz or 1080P@60Hz resolution output. The premise of high definition is to use high-quality HDMI cables. If the image is blurry, please set the input/output resolution to 1080P. It also has a separate stereo audio port for connecting speakers. 【Supports 108° Image Flip】Supports 8 kinds of combination splicing modes such as 1*1, 1*2, 1*3, 1*4, 2*1, 3*1, 4*1, 2*2 (flip), to meet different splicing needs and splicing scenarios. TV flip 180° (2 x 2 mode only), flipping the top row of the TV makes the splicing gap smaller and more beautiful. 【HDMI, VGA Interface Video Input】The LED video wall supports video input with two different interfaces (HDMI, VGA). It supports various TV monitors on the market, and can also be freely connected to general household TVs, and is plug-and-play. Remote switching is possible with the remote control.