Disclosed is a board including a semiconductor device including a first terminal to receive a signal that sets a functionality of the device, a second terminal to supply a first value and a third terminal to supply a second value, a first connection member connected to the first to third terminals of the semiconductor device, and a second connection member adapted to be connected to the first connection member provided on a counterpart board, with at least two terminals of the second connection member connected together via a first connection circuit, wherein the first connection member of the board is connected to the second connection member of another counterpart board.