Elo TouchSystems ENTUITIVE TOUCHMONITOR ET1545C - Manual (Page 15)

Connecting Your Touchmonitor
Elo Entuitive Touchmonitor CRT Rear Mount User Guide - 9
3. Connect the touchscreen cable. Determine if you have RS-232
or USB. Connect one end to the appropriate port on the back of
your PC. Connect the other end of the cable to the touchscreen
connector on your touchmonitor. Secure the serial cable to your
touchmonitor and PC by turning the screws on the connector.
The USB cable connectors should fit snugly into the connectors
on your PC and touchmonitor.
OR
Tethered video cable
Serial touchscreen cable
Power cable
Tethered video cable
USB
touchscreen cable
Power cable