The CH Pro Throttle USB Hardware is a type of throttle control device used primarily in flight simulation setups. It provides a physical interface for controlling engine throttle, propeller pitch, and other functions in flight simulation software. The device is made by CH Products, a company that specializes in manufacturing flight simulation hardware like joysticks, throttles, rudder pedals, and other control devices.

The CH Pro Throttle USB Hardware driver is a piece of software that allows your Windows operating system to communicate with the CH Pro Throttle device via a USB connection. Without the driver, Windows wouldn't recognize the throttle, and it wouldn't function properly in flight simulation software.