Arduino Micro

The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit. It has 20 digital input/output pins

Arduino/Genuino Micro with pre-installed openQCM Firmware

Pro Micro Atmega32u4 5v16mhz Replace Atmega328 For Arduino Pro Mini With 2 Row Pin Header For Leonardo Mini/type-c Usb Interface - Integrated Circuits - AliExpress

Arduino Micro — Specs, Capabilities & Pinout

Pololu - Arduino Micro

Arduino Micro Pro ATMEGA32U4 5V/16MHZ

SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - DEV-15795 - SparkFun Electronics

OSOYOO Pro Micro 5V/16MHz Module Board with 2 Row pin Header Replace wit Pro Mini for Arduino : Electronics

Type-C MINI USB Pro Micro For Arduino ATmega32U4 5V/16MHz 3.3V/8Mhz Module With 2 Row Pin Header Leonardo Usb Interface Board - AliExpress

A000053 Arduino, Arduino Micro Development Board, 771-7667

Breakout for Arduino MICRO - Winford Engineering