Patent ID: 7433193

Claim:
An electronic system, comprising: a transceiver module having a circuit board side and a heat dissipation side; and a circuit board assembly having a printed circuit board, a connector mounted to the printed circuit board, and a rail fastened to the printed circuit board, the rail being adapted to control positioning of the transceiver module relative to the connector, the rail including: two side portions that define two sides of a transceiver module space, a mid portion interconnected between the two side portions, the mid portion and the two side portions forming a component, and a blocking structure coupled to the component; the blocking structure being adapted to (i) permit a connecting portion of the transceiver module to connect with the connector when the transceiver module engages the rail and moves into the transceiver module space toward the connector and when the circuit board side of the transceiver module faces the printed circuit board, and (ii) prevent the transceiver module from contacting the connector when the transceiver module engages the rail and moves into the transceiver module space toward the connector and when the heat dissipation side of the transceiver module faces the printed circuit board wherein the blocking structure is adapted to provide interference against the heat dissipation side of the transceiver module when (i) the transceiver module is substantially disposed between the two side portions of the rail and (ii) the heat dissipation side of the transceiver module contacts the printed circuit board.