The present invention relates to a system for unmating a board-to-board high pin count connector pair, said connector pair comprising two connector elements adapted to be mated together and fixedly mounted on two respective boards; said connector pair is so configured that the two boards are substantially parallel when the two connector elements are mated together; the system according to the present invention comprises at least two cam elements rotatably mounted on a first board on opposite sides with respect to the corresponding connector element and rotation means adapted to manually rotate the cam elements so as to apply a force to a second one of the two boards when the two connector elements are mated together, thereby unmating the connector pair.