A card-edge board connector is provided which does not require a relay board, does not make connection of the card-edge board fixed at a certain position or does not cause a difference in propagation time of a signal even if connecting terminals of the card-edge board are disposed in two rows. The card-edge board connector includes a first connector on which a card-edge board is mounted, a second connector on which a board is mounted, a hinge for holding the first and the second connectors capable of rotational movement, and a flexible connecting board connected to between the first and the second connectors, for electrically connecting the card-edge board and the board to each other.