Abstract: A dual-function DUT board connection and disconnection and prober/handler docking system is easy to use and provides high quality parallel electrical interconnection for a large number of signals by exerting a proper amount of pressure over a large but variable connection area with a high degree of reliability. A cam-ring is rotatably mounted to a load board. A DUT board, a DUT board holddown ring with cam followers and (optional) layers of pin-protecting plastic rings are aligned by two alignment pins on the load board into a correct position for mating of electrical connections between the load board and the DUT board. Rotation of the cam-ring by attached handles forces cam followers on the DUT board holddown ring to be drawn closer to the load board, bringing the DUT board into suitable electrical contact with connectors that electrically connect the DUT board to the load board.