The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board
arduino micro products for sale
Pro Micro - 5V/16MHz - DEV-12640 - SparkFun Electronics
Arduino Uno Ethernet Shield W5100 - RoboMaterial
A slim sleek looking case to protect the Pro Micro developer board (not included) Compact design protects usb port and board Designed to be compatible
Zebra Case for The Inland Pro Micro Development Board (Arduino Compatible) (Three Pack)
OSOYOO Pro Micro 5V/16MHz Module Board with 2 Row pin
Arduino Leonardo - RoboMaterial
Arduino Micro — Arduino Official Store
The Micro is a microcontroller board based on the ATmega32U4, developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard.
Arduino 5V Micro with Headers
DIY tiny Arduboy based on Arduino pro micro
Arduino Compatible Pro Micro
Arduino Due SAM3X8E - RoboMaterial