6 PWM ports， D3， D5， D6， D9， D10， D11.<br />1 TTL level serial port transceiver port RX / TX.<br />Support external 3.3V-12V DC power supply.<br />Support lithium battery and 9V battery-powered.<br />8 analog input ports A0-A7.<br />12 digital input / output ports D2-D13.<br />Support ISP download<br />Atmel Atmega328P-AU single chip.<br />Nano's technical parameters:<br />Support USB download and power supply.<br />Package Included:<br /> <br />1 x USB Nano V3.0 ATmega328 16M 5V Micro-controller CH340G board For Arduino