USB Brick PowerThe USB Brick Power is a small power
module that accepts USB power and provides three voltages. The main
voltage is 9VDC to run your Lego Power Function motors. The switch on
the side will reverse the 9VDC for changing the direction of the motor.
Additionally VUSB and 3.3VDC are provided. This module will also plug
into the MyMakerTools Brick controller and power it.