The board can be connected to 2 stepper motors or 2 RC servos or 4 regular motors.
Boards can be stacked on top of each other (32 pcs) as long as you change the board address, allowing control of more motors.

• designed for 5-12V motors
• driver IC: TB6612 (4H)
• current: 4 x 1.2A per H-bridge (peak 3A 20ms)
• I2C 7-bit address selection (solder pads) between 0x60-0x7F

Connectors:

• VIN jumper:
  The jumper should be fitted only if you power the boards with a single power source, either via the Arduino (DC jack) or via the motor shield screw terminal. When using separate power supplies for the boards, leave the jumper off. See PDF page 30 https://cdn-learn.adafruit.com/downloads/pdf/adafruit-motor-shield-v2-for-arduino.pdf

• Power-in 2-pin terminal connector: Connector for external power supply 5-12V (see VIN jumper)

Note! The board is designed for low-power motors (H-bridge 1.2A), so you cannot feed large currents to motors through the board.

• screw terminal connections for stepper and regular motors (If you take 5V from the Arduino, the VIN jumper must be fitted)
• 3-pin servo connectors for two RC servos:
  The 3-pin headers are connected to the board pins (5V, Gnd, 9 and 10),
  so 5V and GROUND are already connected to the connector, meaning the VIN jumper does not need to be fitted.
  PWM lines, i.e. pin 9 (servo 2) and 10 (servo 1))
• board dimensions: 70 x 55 x 10 mm
• includes Arduino pin header and VIN selection jumper

Driver available for Arduino from Adafruit's site: https://learn.adafruit.com/adafruit-motor-shield-v2-for-arduino/install-software

technical details: https://learn.adafruit.com/adafruit-motor-shield-v2-for-arduino/overview