Pro Micro 5V/16MHz Arduino Compatible Microcontroller - RobotShop

Buy Pro Micro Development Board Compatible with Arduino 5V 16 Mhz

The Pro Micro is similar to the Pro Mini, except for the fact that it utilises the ATMega32U4. Additionally, there is an on-board USB transceiver

Arduino Compatible Pro Micro

SparkFun Pro Micro - 5V/16MHz

Arduino Microcontroller Feature Comparison

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

Arduino Pro Mini 328 - 5V/16MHz - RobotShop

Buy Arduino Pro Micro 5V/16MHZ Online in India

Getting Started With Arduino : 5 Steps (with Pictures) - Instructables

Pro Micro Leonardo 32u4 - 5V/16MHz

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

Arduino Compatible Boards - Optimus Digital