ATmega32u4 PRO MICRO USB Leonardo (Arduino-Compatible) – Flux Workshop

Leonardo R3 Pro Micro ATmega32U4 Board Arduino Compatible IDE + free USB cable

10pcs Pro Micro/mini Usb 5v 16mhz Board Module For Arduino/leonardo Atmega32u4-au/mu Controller - Integrated Circuits - AliExpress

Arduino Pro Micro Atmega32u4 16mhz 5v Leonardo Electronic Pro Micro - Pro 5v 16mhz - Aliexpress

Mini USB Leonardo Pro Micro ATMEGA32U4 5V 16MHz Board Module For Arduino–OKY2010-1 – OKYSTAR

Type-c Mini Usb Pro Micro For Arduino Atmega32u4 5v/16mhz Module With 2 Row Pin Header For Leonardo Usb Interface Board - Integrated Circuits - AliExpress

Arduino Leonardo Ethernet Botland - Robotic Shop

Arduino Micro — Arduino Online Shop

RedTagCanada Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Board Microcontroller Compatible to Arduino Pro Micro Serial Connection wPin Header (1, Pro Micro ATmega32U4 Micro-USB) : Electronics

Keyestudio ATmega32u4 PRO MICRO USB (Arduino-Compatible) – Flux Workshop