Power Supply - i3TOUCH V-SENSE 8404 4K T10 User Manual

If the display is connected properly but you cannot finish the installation, make sure the USBport
and cable are working & supplying sufficient power (see step 5). To check if the USB-port &
cable are working, first try another USB-port. Then try another computer and/or try another
short high quality USB-cable. Do not connect the i3TOUCH with your computer using multiple
USB-cables (see step 6). Unless you concluded after testing that it is defect, we advise only to
use the USB-cable delivered with the i3TOUCH. Prolonging the distance from i3TOUCH to PC
using multiple USB-cables can result in a loss of power and signal strength (data signal).

5 Power supply

The i3TOUCH needs around 5 volts to be recognized & work properly. The touch sensor is
powered via the USB-cable and the USB-port of your computer. In very seldom situations (!) a
i3TOUCH Premium XX03 (XX stands for display size) can have touch that shows strange
behavior such as random "ghost touch points" on locations where no finger or pen is located.
The I3TOUCH XX04 Premium and the i3TOUCH Excellence series require a lower voltage and
will therefore hardly be subject to power loss.
Strange behavior or a non-recognized touch sensor - when ports & connections were checked -
are mostly the result of a USB-port not supplying sufficient power, cables that are prolonged or
a single cable that is too long or not high quality. If you tried another cable and/or computer and
the problem is only encountered with one computer, use a powered USB-hub (a USB-hub with
its separate power supply providing a power boost to all USB-ports)
When you need to prolong the cable length to the i3TOUCH, use active USB extender cables.
See step 6.
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i3TOUCH 04 FHD T10 USER MANUAL