Pro Micro Atmega32U4 5V\/16M Module Board For Arduino<br>Features:<br>ATMega32U4 running at 5V\/16MHzSupported under for Arduino IDE v1.0.1On-Board micro-USB connector for programmingFour 10-bit ADC pinsTwelve digital I\/Os (5 are PWM capable)Rx and Tx Hardware Serial Connections<br>Package included:<br>1 x Pro Micro Atmega32U4 Module Board