RGBLink Driver User Manual - Manual (Page 28)

Driver User Manual 28
How to Work
Push power button to ON position, the red indicator is on if the device is in
normal operation.
When input DVI and HDMI signal simultaneously, the HDMI signal has
priority, green signal indicator lights, and the device output HDMI signal.
Pull out the HDMI cable, green signal indicator lights, and then the device
output DVI signal.