What are the Arduino micro and Pro micro board?

Pro Micro & Fio V3 Hookup Guide - SparkFun Learn

Printed Matrix Board for Button Box/arduino Pro Micro, Practical and Customizable Control for Your Electronic Projects.

Arduino Pro-Micro – PrismaKBD

DIY SparkFun Pro Micro with USB-A Port - Parts Not Included

Pro Micro ATMEGA32U4 Arduino Pins and 5V, 3.3V Explained

The Inland PRO MICRO is a microcontroller board based on the ATMEGA32U4-MU. It is an easy-to-use open source hardware and is fully compatible with Arduino. This board offers 18 GPIO and 9 analog input pins as well as SPI and I2C serial communication.

Inland Pro Micro Development Board Arduino Compatible KS0249

American Raspberry Pi Shop. One stop shop for all your Pi needs. Raspberry Pi add-ons, HATs, accessories, Starter Kit, Media Center kit, RetroPi

Pro Micro Compatible Board - 5V/16MHz

Paradisetronic.com Pro Micro Module with ATmega32U4, Compatible with Arduino Leonardo Board, 5V, 16MHz

Arduino Pro Micro connections pinouts with NRF24Ç01+ radio.

40% Keyboards: Pro Micros

Part: Arduino Pro Micro (Clone) - parts submit - fritzing forum

Arduino Pro Micro Board, 14 at Rs 370/piece in Thane

Arduino Micro — Arduino Official Store

OSOYOO Pro Micro ATmega32U4 5V/16MHz Module Board with 2 Row pin Heade

Pro Micro ATmega32U4 Board 5V 16MHz Compatible with Arduino Pro Micro ATmega32U4