Abstract: A lock device is provided that easily enables attachment and detachment of an expansion unit to and from a computer body such as of a notebook personal computer. The lock device includes a pivotal piece near an expansion-unit insertion slot in the computer body, a first element that extends along a moving direction of the expansion unit, which moves in an extending direction by the pivoting action of the pivotal piece, and includes a press portion that presses the expansion unit when the expansion unit is to be released, and a second element engageable with an engagement portion of the expansion unit, the second element being disengageable from the engagement portion when the first element moves.

Abstract: An information processing system having a function extending apparatus including at least one first connector provided on a surface of the function extending apparatus for mounting the information processing device, and connected with at least one corresponding second connector provided on a lower surface of the information processing device, when the information processing device is mounted on the function extending apparatus. The function extending apparatus includes a pushing member moved in an upper direction so as to push the information processing device up from the function extending apparatus, a rotatable operation member, and a push-up mechanism which moves the pushing member in the upper direction, when the operation member is rotated.

Abstract: The present invention discloses a function extending apparatus detachably connected to an electronic apparatus to enhance functions of the electronic apparatus, the function extending apparatus including a connection control part controlling a connection between a battery and a charging part in accordance with a result of detection of docking to the electronic apparatus so as to supply power from the electronic apparatus to the battery.

Abstract: A function of the extending apparatus for an information processing device including at least one connector provided on a surface of the function extending apparatus for mounting the information processing device, and connected with a corresponding connector provided on a lower surface of the information processing device, when the information processing device is mounted on the function extending apparatus. The function extending apparatus includes a pushing member moved in an upper direction so as to push the information processing device up from the function extending apparatus, a rotatable operation member, and a push-up mechanism which moves the pushing member in the upper direction, when the operation member is rotated.

Abstract: A function extending apparatus for an information processing device including at least one first connector provided on a surface of the function extending apparatus for mounting the information processing device, and connected with at least one corresponding second connector provided on a lower surface of the information processing device, when the information processing device is mounted on the function extending apparatus. The function extending apparatus includes a pushing member moved in an upper direction so as to push the information processing device up from the function extending apparatus, a rotatable, and a push-up mechanism which moves the pushing member in the upper direction, when the operation member is rotated.

Abstract: A thin structure information processing apparatus includes a body having a substantially planar structure and an interior accommodating therein at least a main board; a power supply board; a built-in battery; and a built-in hard disk drive. The main board, the power supply board, and the built-in battery and the built-in hard disk drive are arranged in such a manner they are not substantially imposed on each other (i.e., do not overlap each other) with respect to a major plane of the substantially planar structure.