ITEM NAME:Arduino Nano V3.0 SEMEGA328P Shield I/O Extension Board Expansion Module M&E Feature: Brand new and high quality. P roduct Features: Draw out all of the digital I/o mouth and analog I/o mouth, every IO mouth has the positive and negative power supply interface standard Lead the I2C interface on the main board, convenient and connection of the I2C device Increase the DC power supply interface. The NANO plate on the USB interface power supply current is actual only 50 ma, to bring high current equipment such as steering gear, when I was at this time in DC power supply interface provides an external power supply, ensure the stability of equipment operation. 14 I/O Pin (servo type with GND, power and signal) 8 analog Pin with power output and GND 6 PWM Pin 1 Servo power input I2C expansion Pin AREF output 3.3V output Size:6x5.3x1.3cm(approx) Package included: 1 x Arduino Nano V3.0 UNO ATMEGA328P Shield I/O Extension Board Expansion Module Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!.Lead the I2C interface on the main board, convenient and connection of the I2C device. I2C expansion Pin. 1 Servo power input. Size:6x5.3x1.3cm(approx). 14 I/O Pin (servo type with GND, power and signal).