The MicroTouch Touchscreen USB Controller is a hardware component used in various touchscreen devices (like monitors, kiosks, and interactive displays) that provides a USB interface for the touchscreen. The controller allows the touch surface to communicate with the computer, translating touch input into corresponding actions on the screen.

In order for the touchscreen to work properly with a Windows system, the correct driver needs to be installed. The driver facilitates communication between the touchscreen hardware and the Windows operating system, ensuring proper functionality of touch gestures, calibration, and other features.