1,Supports for VGA, XVGA, SVGA, UXGA and multi‑synchronous displays. DDC, DDC2, DDC2B are not supported so that two computers share one display and projector. 2,Two monitors and projectors share one computer instead of using two button switches at the same time to change the VGA signal control. The VGA switch can be used for security settings. 3,2 in and 1 out plug and play, no additional software is required, different areas of the building need to be monitored, and multiple inputs must be switched. 4,Device type, 2 PC to 1 monitor VGA switch box interface type, 3 standard VGA inner holes (2 in 1 out). 5,No system requirements can be assured to connect to the computer monitor, efficient video conversion or other file conversion, very fast and convenient. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store