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
ATmega328 running at 16MHz with external resonator. USB connection off board. DC input 5V up to 12V. RoHS Compliant. The Arduino Pro Mini 328 - 5V/16MHz is a 5V Arduino running the 16MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need.
SparkFun Arduino Pro Mini 328 - 5V/16MHz
Arduino Pro Mini 328 - 5V/16MHz - RobotShop
Arduino Pro Micro - 5V/16MHz - RoboticX
Leonardo Pro Micro ATmega32U4 16MHz 5V Replace ATmega328 For Arduino Pro Mini
Arduino PRO Micro 5V 16 MHZ at Rs 435/piece, Arduino Boards in Palghar
Mini USB ATmega32U4 Pro Micro 5V 16MHz Board Module Without Cable at Rs 459.00 Arduino UNO Board, Arduino Development Board, Arduino Microcontroller Board, आर्डुइनो इलेक्ट्रॉनिक डेवलपमेंट बोर्ड - Labsguru
Pro Micro - 5V/16MHz (DEV-12640) — Cool Components
DB0028 - Arduino Pro Micro ATMega32u4 16MHz 5V
Description ATmega328 running at 16MHz with external resonator USB connection off board DC input 5V up to 12V RoHS Compliant The Arduino Pro Mini 328
Arduino Pro Mini 328 - 5V/16MHz