Patent ID: 8089751

Claim:
A portable memory device comprising: a housing being formed in a front end surface thereof with a front port in communication with an interior of the housing, and a rear end surface of the housing being provided with a jointing portion and a rear port in communication with the housing, the housing being provided on each of the two side surfaces with a guiding groove; a circuit board including a plug and a connecting portion at both ends thereof and being slidably disposed in the housing with the plug selectively sliding out of or back into the front port; a covering member including a first covering portion and a second covering portion formed at one end of the first covering portion, another end of the first covering portion being pivoted to the connecting portion of the circuit board, at both sides of the first covering portion being formed two protrusions to be slidably received in the guiding grooves; when the plug is retracted into the front port, the first and second covering portions will close the rear port, when the plug extends out of the front port, the second covering portion cooperates with the jointing portion to close the rear port.