ITEM NAME:1 x Micro ATmega32u4 5V 16MHz Compatible Arduino Mirco Replace Pro Mini New Descriptio n Description: Software download URL: http://www.arduino.cc/ The professional version of the Mini Pro is a microcontroller board. It has 14 digital input/output pins (6 of which can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, and a mounting hole pin header. Technical Parameter: 1. 14 Digital Input/Output Ports RX, TX, D2~D13 2. 8 Analog Input Ports A0~A7 3. 1 Pair Of TTL Level Serial Port Transceiver Port RX/TX 4. 6 PWM Ports, D3, D5, D6, D9, D10, D11 5. Using Atmel Atmega328P-AU Microcontroller 6. Support Serial Port Download 7. Support External 3.3V~12V DC Power Supply 8. Support 9V Battery Power Supply 9. Clock Frequency 16MHz 10. Size: 33.3*18.0 (mm) Specifications: Material: Circuit Board Color: Blue Size: About 3.4cm X 1.8cm Mechanical Rigidity: Rigid Number Of Layers: Double-Sided Substrate: Synthesis Package Included: 1 *Â Pro Micro ATmega32U4 5V/16M Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 1 x Micro ATmega32u4 5V 16MHz Compatible Arduino Mirco Replace Pro Mini New.It has 14 digital input/output pins (6 of which can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, and a mounting hole pin header. Clock Frequency 16MHz. 1 Pair Of TTL Level Serial Port Transceiver Port RX/TX.