The utility model relates to the technical field of
server expansion, in particular to a
server external plug-in card module reinforcing device which comprises a
server mainboard and an external plug-in card module, a mounting plug board is arranged on one side of the external plug-in card module, a
tail plug is arranged at one end of the mounting plug board, a locking hook claw is arranged at the other end of the mounting plug board, a top pressing seat is arranged on the locking hook claw, and the external plug-in card module is arranged on the top pressing seat. A locking groove is formed in one side of the jacking seat, and a locking
assembly for clamping the locking hook claw is arranged on the server mainboard. According to the server external plug-in card module reinforcing device, a
tail plug at one end of a mounting plug board is plugged in a plug-in seat, a locking hook claw at the other end of the
tail plug is clamped in a locking
assembly, elastic force is applied to a spring bolt through a compression spring, the spring bolt is clamped in a locking groove in one side of the locking hook claw, and locking of one end of the mounting plug board is achieved; the external plug-in card module can be locked on the server mainboard through matching of the locking
assembly and the bayonet socket, and stable connection between the external plug-in card module and the server mainboard is guaranteed.