RGBLink VSP 516S User Manual - Manual (Page 86)

5. Communication Software Control Guide
How to Connect Windows Control Program by USB Interface
VSP 516S User Manual 86
Press to start communication, when there is green point in the right
down corner showing on the software, it means the communication is ok,
and user can use the software to control the device now, the software
operation is the same as VSP 516S.