| 摘要 |
A printed circuit board assembly includes a printed circuit board (10), a retention module (20) mounted on the printed circuit board, and a back plate (30) attached to an underside of the printed circuit board opposite the retention module. The printed circuit board defines a plurality of through holes (16). The retention module defines a plurality of countersunk holes (25) therein, corresponding to the through holes of the printed circuit board. The back plate includes a base (32), and a plurality of latching posts (34) extending upwardly from the base. The latching posts extend through the through holes of the printed circuit board and engage in the countersunk holes of the retention module, thereby fixing the retention module to the printed circuit board. A plurality of fasteners (40) engages in the latching posts, thereby facilitating resilient engagement of the latching posts in the countersunk holes of the retention module.
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