GitHub - sparkfun/Pro_Micro: ATMega32U4 Arduino board, available from SparkFun Electronics
Qwiic Pro Micro USB-C (ATmega32U4) - SparkFun | Mouser
Eqv Pro Micro Atmega32u4 5v 16mhz Replace Atmega328 For Arduino Pro Mini With 2 Row Pin Header For Leonardo Usb Interface - Integrated Circuits - AliExpress
power - How can I get my (Arduino) Pro Micro schematic to allow me to program it through GPIO instead of USB - Arduino Stack Exchange
Pro Micro ATMEGA32U4 Arduino Pins and 5V, 3.3V Explained | Robojax
Introduction to Arduino Pro Micro - The Engineering Projects
Pro Micro 5V / 16MHz - ProtoSupplies
Qwiic Pro Micro USB-C (ATmega32U4) - SparkFun | Mouser
Pro Micro pinout
Introduction to Arduino Pro Micro - The Engineering Projects