1. This device is multi-viewer with matrix function, it supports the subtitle display function and has a variety of video segmentation, seamless switching 8 HD input signal synchronous, supports up to 8 HDMI signal source input and the maximum output of 4K@60Hz. Plug and play and easy operation, often used in conference rooms, classes, games and other HDMI signal sources. 2. This 8X2 HDMI matrix can switch between 8 input source devices and the signals on 2 displays (2 displays can display the same image or different images). 3. The product can enlarge the HDMI signal at the HDMI output, input resolution up to 1080P/60Hz, output resolution up to 4K/60Hz.