<p>Note: When you open the IDE software, please go to the Tool and choose the board "Leonardo" or <br> "Genuino Micro"<br> <br> Feature:<br> ATmega32U4 running at 5V/16MHz<br> Supported under Arduino IDE<br> On-Board micro-USB connector for programming<br> 9x 10-bit ADC pins<br> 12x Digital I/Os (5 are PWM capable)<br> Rx and Tx Hardware Serial Connections<br> dimension: 33.5 x 18.5 mm(1.3 x 0.7 inch)<br> <br> Package includes:<br> 3 x Pro Micro ATmega32U4 Module for arduino</p>