Patent ID: 7576999

Claim:
A retention assembly for assembling an expansion card, the expansion card being mounted to an expansion card bracket attached to an enclosure, the retention assembly comprising: a latching structure having a first latching portion configured to resist the expansion card bracket, and the latching structure being slidable along a first direction to move away from or close to the expansion card bracket, the latching structure comprising a removable holder and a latching catch forming the first latching portion and a second latching portion, the removable holder being configured to resist the expansion card bracket, the removable holder comprising a holding piece, two engaging pieces formed at opposite ends of the holding piece, and a connecting portion forming at least one connecting protrusion, the second latching portion defining at least one catching hole, and the at least one catching hole is configured for engaging with the at least one connecting protrusion, thus fixing the latching catch to the removable holder; and a frame fixed relative to the enclosure, the frame having a catching protrusion for engaging with the first latching portion of the latching structure, the frame comprising a main body and two limiting pieces extending from opposite ends of the main body, and the limiting pieces of the frame engaging with the engaging pieces for positioning the removable holder; wherein either the first latching portion of the latching structure or the catching protrusion of the frame is deformable, such that the first latching portion and the catching protrusion can engage with or disengage from each other.