Arduino Compatible Nano Shield I/O Extension Board Expansion ModuleDescription:Nano IO Expansion Shield is specifically designed to facilitate an easy connection between Nano and many other devices.In essence, it expands the Nano controller to link those devices in a simple and trouble free manner.You can easily connect your nan to breadboard, jumpers, sensors, modules etc.It outputs all digital IO port and analog IO port, each one with standard positive and negative power interface.The DC power connector provide external power supply to the arduino nanoSpecifications:14 pieceI/O Pin (servo type with GND, power and signal)8piece analog Pin with power output and GND6piece PWM PinAREF output1 piece Servo power inputI2C expansion PinOutput Voltage: 3.3 VoltDimensions: Length2.42″ x Width 2.15″ x Height 0.59″