Patent ID: 7835148

Claim:
A portable storage device comprising: a storage module whereon a hole is formed; at least one lateral plate disposed on a lateral side of the storage module, the lateral plate comprising a first lateral wall and a second lateral wall, and a slot being formed on the first lateral wall; a fixture disposed on a front side of the storage module, the fixture comprising at least one wedging component for wedging in the slot of the lateral plate, a dot being formed on a side of the wedging component, the dot being located inside the slot when the first lateral wall is inserted into the fixture, the dot contacting against an edge of the slot when the lateral plate is drawn out from the fixture, and at least one groove being formed on the fixture; and a lock mechanism disposed on a side of the fixture, the lock mechanism comprising: at least one lock comprising a protrusion for protruding into the groove on the fixture; and an elastic component connected to the lock for providing an elastic force to the lock so that the protrusion wedges in the groove on the fixture.