Brand NO Model NO Quantity 1 Color Blue+Black Material PCB Features Independant USB-Serial transfer chip Leonardo adopts single chip solution to realize USB communication and control; Require for Arduino IDE1.01 and above version Specification Controller: ATmega32u4; Working frequency:16MHz; Working voltage: 5V; Input voltage (suggested): 7~12V; Digital I/O ports: 20; PWM channel: 7; Analog input: 12; 5V D/A port max. allowable current: 40mA; 3.3V D/A port max. allowable current: 50mA; Flash Memory:32 KB (ATmega32u4) of which 4 KB used by bootloader SRAM: 2.5 KB (ATmega32u4) EEPROM: 1 KB (ATmega32u4) Application Arduino DIY project English Manual/Spec YES Packing List 1 x Module Source: http://m5.img.dxcdn.com/CDDriver/CD/sku.213956.inf