| Name  | Description  | 
| Introduction | Introduces the MPLAB Harmony 3 USB Device Layer Library.  | 
| Using the
                  Library | This topic describes the basic architecture of the USB Device Layer Library and
                provides information and examples on its use.  | 
| Configuring
                  the Library | Describes how to configure the USB Device Library.  | 
| Library
                  Interface | This section describes the Application Programming Interface (API) functions of
                the USB Device Layer Library.Refer to each section for a detailed description.
               | 
| Files | This section lists the source and header files used by the library.  |