Controlled insertion and retraction of an electronic module in a cabinet

1. A device comprising:

a shelf surface defining an opening and supporting a first strike defining a first key orientation extending into the opening and a second strike defining a different second key orientation in a second opening; and

a module sized for insertion into the opening so that a module side of a portion of the module in the opening facingly opposes the shelf surface, the module supporting a latch having an open mode that clearingly disengages the first strike, and a closed mode that contactingly engages the first strike and thereby imparts a longitudinal insertion force on the module and simultaneously imparts a lateral retention force urging the shelf surface entirely toward the module side to define a desired gap in the facing opposition between the shelf surface and the module side.

2. The device of claim 1 wherein the latch defines an open-ended slot adapted for passing the first strike into and out of receiving engagement with the latch.

3. The device of claim 2 wherein the latch defines a closed end of the slot defining a close mating relationship with the first strike at the extent of a latch pivotal movement.

4. The device of claim 2 wherein the first strike comprises a cylindrical contact surface of a diameter smaller than a slot width bearing the longitudinal force, and a conical contact surface depending from one end of the cylindrical surface and terminating in a diameter greater than the slot width bearing the lateral retention force.

5. The device of claim 1 wherein the first strike defines a key feature that clearingly engages a slot of the module in a preselected orientation of the module in the opening.

6. The device of claim 1 wherein the insertion force urges a connector portion of the module into an operable connection.

7. The device of claim 1 further comprising an electromagnetic interference contact operably compressed in the desired gap.