Getting Started with the Arduino Leonardo, Leonardo ETH and Micro | Arduino Documentation | Arduino Documentation
Leonardo R3 Microcontroller Original Atmega32u4 Development Board With Usb Cable Compatible For Arduino Diy Starter Kit - Integrated Circuits - AliExpress
Getting Started with the Arduino Leonardo, Leonardo ETH and Micro | Arduino Documentation | Arduino Documentation
Arduino Leonardo - Windows Hardware USB Installation Guide
USB Serial Driver Quick Install - learn.sparkfun.com