Now you can connect sensors, servos, and many other modules easily to your Arduino Nano. The expansion board has 14 I/O pins (each with power and GND), 8 analog pins (also with power and GND for each), 6 PMW pins, 5 I2C expansion pin, AREF output, 3.3V output, and 1 servo power input. Simply, with this board, you won't need a breadboard for your Nano!