An electrical connection system is comprised of male and female electrical connector members where the male (60) and female (2) electrical connector are electrically interconnected to printer circuit boards (50,90) where the printed circuit boards (50,90) are intended for parallel mounting relative to one another. To reduce the vertical distance between the facing surfaces of the electrical printed circuit boards, the printed circuit boards include apertures (52,82) at least partly through the facing surface of the printed circuit board, and the male and female electrical connectors (2,60) are recessed into the apertures (52,82) of the printed circuit boards (50,90). This reduces the distance between the upper face of the electrical connector and the corresponding upper surface of the printed circuit board thereby providing a more dense profile between the interconnected opposing printed circuit boards (50,90).