Abstract: A system for mounting components within a frame of a personal computer where access to only one side of the frame is needed to mount or remove the components with fasteners and fastening tools. The components are secured and restrained from movement in three orthogonal directions. The fasteners are mounted to the exposed side. Bracket guides and spring fingers extend from the frame to provide location and biasing forces to secure the components in their proper locations. This system requires fewer fasteners and reduces assembly time during manufacturing and/or repair. It is easier and quicker to remove and replace a defective component or one which is being upgraded in the system.

Abstract: A frame is provided at the front end of the adapter card receiving area of a personal computer which includes card guides, a flex bar for retaining inserted cards and a dual function blocking member which has opposed blocking surfaces so arranged that they retain the locking bar respectively in a lock and open position respectively and transition between the two with simple, one-hand activation.