LG KT-T650 Owner's Manual page 19

Connect the TOUCH USB cable on the side of the product to the USB port on the back of the monitor.
Back of the Product
CAUTION
It may not be supported depending on the model.
y y
The image may be different according to the model.
y y
If there is a change in installation environment (lights etc.), please remove and reconnect the TOUCH
y y
USB cable.
INSTALLATION INSTRUCTIONS
19