Abstract: A holder located on a casing using for loading a hard disk includes a bottom surface, at least a first elastic element and at least a second elastic element. The bottom surface is facing to a first surface of the casing. The first elastic element is located on the bottom surface having a first end connected to the bottom. At least a part of the first elastic element is configured through an opening and clipped on a second surface of the case. There is at least an opening configured through the first surface and the second surface. The second surface is in opposition to the first surface. A third end of the second elastic element is connected to the bottom surface, and at least a part of the second elastic element contacts against the first surface.

Abstract: A magnetic lock device is installed on a first body and a second body. The first body is connected pivotally to the second body. The magnetic lock device comprises at least one first element, at least one second element and at least one control module. In this case, the first element is located on the first body. The second element is located on the second body. When the first body and the second body are closed, the second element is in a first position and the first element faces to the second element for providing a magnetic attraction between the first body and the second body. The control module is located on the second body and connects to the second element. When a force in a first direction moves the control module, the control module drives the second element to leave the first position.

Abstract: A heat sink device is disposed in an electrical apparatus. The heat sink device comprises a fan and a transferring tube. In this case, the transferring tube has a first end and a second end. The first end is near to the fan, and the second end is near to a first heat source. When the fan rotates to produce airflow, the heat generated by the first heat source is transferred from the second end to the first end.