The board has two inputs. A standard USB 5 V input and a DC barrel jack for 7 to 12 V input. Only one of the two inputs can be used at any one time.
Two onboard regulators provide an output voltage of 5 V and 3.3 V. These voltages are available on the top side of the PCB. Two pin headers for 5 V and two pin headers for 3.3 V. Four pin headers provide the ground.
Pin headers at the bottom of the board are grouped into two pairs. The output of each pair can be set to 5 V or 3.3 V independently. The voltage is set from two pin header links at the top of the board.
ON / OFF switch and a power indicator led are provided on board.
