Track-based support system for electronic cards

An apparatus and method provide supplemental support to an electronic card from above, such as along a longitudinal edge of a PCI card opposite an edge connector on the motherboard. The supplemental support may be provided at any of a plurality of locations along the edge of the card, to avoid interference with certain features on the card and to accommodate cards of a variety of shapes and sizes. One embodiment provides a support apparatus that includes a track secured to the computer chassis over the card, and is generally aligned with a longitudinal edge of the electronic card. A collar is disposed on the track and is moveable to any of a plurality of positions along the track. A plunger is inserted through the collar and is movable with respect to the collar into engagement with the longitudinal edge of the electronic card. A first locking member is activated in response to inserting the plunger into the collar to prevent relative movement of the collar and the plunger with respect to the track. A second