An Introduction to USB Communication (Part 1) - Open4Tech
How USB Communicates - Developer Help
USB Facts of Life : What's An Endpoint?
USB in a NutShell - Chapter 5 - USB Descriptors
![The USB composite framework [LWN.net]](https://static.lwn.net/images/2010/usb-gadget.png "The USB composite framework [LWN.net]")
The USB composite framework [LWN.net]
USB in a NutShell - Chapter 5 - USB Descriptors
USB 3.0: What embedded software developers need to know - Embedded.com
USB endpoints and their pipes - Windows drivers | Microsoft Docs
Initialising the USB peripheral — PIC32 for the hobbyist — No Harmony, no PLIB
RL-ARM User's Guide (MDK v4): Device Configuration
USB Device Middleware Library 2.10: USB Device Middleware Library 2.10
RL-ARM User's Guide (MDK v4): USB Protocol
USB Made Simple - Part 5
USB Endpoints - Developer Help
USB 3.0 Data Structures - Windows drivers | Microsoft Docs
Core USB 2.0 Device Gateware — LUNA documentation
How Many USB Devices Can I Connect? | Acroname
USB device basics
Read more about endpoint limitation - Cambrionix
USB Enumeration | Perytech
USB device layout, descriptors, interface alternate setting - IAmAProgrammer - 博客园
USB Device Middleware Library 2.10: USB Device Middleware Library 2.10
