Data storage device

A data storage device, for connecting electrically to a host receptacle having an insertion slot defined thereon and an abutting portion inside the insertion slot, comprising:

• a storage module having a base board, a plurality of pins, and at least one memory unit, wherein the pins and the memory unit are electrically connected and disposed on the base board;
• a casing having a base portion and three sidewalls members extending vertically therefrom in defining an accommodating region for receiving the storage module, at least one guide block being disposed on each of the oppositely arranged sidewall members, and a support member arranged adjacently to the sidewall members and parallel to the base, wherein a first abutting portion is formed on the support member away from the sidewall members;
• a sliding member having a second abutting portion and guide rails corresponding to the respective guide blocks, wherein the support member is arranged between the base board and the sliding member, wherein the length of the long side of the sliding member is less than the length of the opposing sidewall members, wherein the sliding member may selectively shield the pins;
• and
• an elastic member fixed to the first abutting portion and the second abutting portion on opposite ends thereof, wherein the compression and restoration of the elastic member operate the sliding member to selectively shield the pins.