When the first magnetic coupler 22 and the second magnetic coupler 32 are implemented as magnets, it is possible to arrange the pole of the magnet on the male edge connector 20 and the pole of the magnet on the female connector 30 so that the magnet on the male edge connector 20 repels the magnet on the female connector 30; however, a repelling force does not retain the male edge connector 20 in the female connector 30, so it is desirable to position the poles of the magnets so that they attract each other. The repulsive force between magnets may be used to key how the edge connector (e.g., 20, 40) mates with the connector (e.g., 30, 50) as discussed below.

The attractive force between the first magnetic coupler 22 and the second magnetic coupler 32 not only retains the male edge connector 20 connected to the female connector 30, but the first force of attraction between the first magnetic coupler 22 and the second magnetic coupler 32 is adapted to draw the edge 18 of the PCB 10 into the female connector 30 thereby reducing a force of insertion between the PCB 10 and the female connector 30. In other words, the force of attraction between the first magnetic coupler 22 and the second magnetic coupler 32 makes it easier to insert the male edge connector 20 on the PCB 10 into the female connector 30.