Patent ID: 7855898

Claim:
A retention assembly for expansion card bracket, comprising: at least one frame; a resisting catch, the resisting catch being slidable relative to the at least one frame; a rotatable holder disposed between the resisting catch and the expansion card bracket, the rotatable holder rotatably connected to the at least one frame around a first axis, and rotatably connected to the resisting catch around a second axis parallel to the first axis; and a resisting lock for being fixed relative to the at least one frame; wherein when the retention assembly is in a closed state, the rotatable holder resists and holds the expansion card bracket, and the resisting lock resists the resisting catch to prevent the resisting catch from sliding relative to the at least one frame, when the retention assembly is pulled from the closed state to an opened state, the resisting lock is pushed to release the resistance of the resisting lock to the resisting catch, thus the resisting catch sliding relative to the at least one frame, the rotatable holder rotating relative to the at least frame around the first axis, and the resisting catch rotating relative to the rotatable holder around the second axis.