Device Class Definition for HID 1.11

This document is intended to supplement the USB Specification and provide HID manufacturers with the information necessary to build USB-compatible devices. It also specifies how the HID class driver should extract data from USB devices. The primary and underlying goals of the HID class definition are to:

• be as compact as possible to save device data space
• allow the software application to skip unknown information
• be extensible and robust
• support nesting and collections
• be self-describing to allow generic software applications