Arduino from Scratch Part 7: Arduino USB Connection
USB Wiring Diagram: A Complete Tutorial | EdrawMax
How the USB works
USB Communications Cable for Use with HGSI Brand LVITs | Harold G Schaevitz Industries LLC Linear Position LVIT LVDT Potentiometers and Temperature Sensors
Reference Designs
pcb design - Unknown components in a schematics of a Micro-USB connection - Electrical Engineering Stack Exchange
USB Wiring Diagram: A Complete Tutorial | EdrawMax
FabFTDI
Design and Build your own High Power USB Hub Port Extender
How to connect a FT232RL to a USB type C connector - Projects - KiCad.info Forums
usb c - Sanity check for USB-C connector schematic - Electrical Engineering Stack Exchange