Elo TouchSystems ET1903LM User Manual page 15

Projected Capacitive Touch Technology
When connected to Windows 7 or 10 computers, the touch monitor can detect 10 simultaneous touches. When connected to Windows XP computers, the
touch monitor detects only single touches.
No additional drivers are required for this technology to work with Windows 7 or 10, as it uses Windows HID drivers.
Refer to Section 2, "Installing the Touch Technology Software Drivers," for instructions on downloading touch drivers for Windows
XP or RS232 touch.
No calibration is required for this technology.
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User Manual ET1903LM, ET2203LM, ET2403LM, ET2703LM REVB