Abstract: A cooling system includes a fan group with a number of fans arranged in a row, a rail extending in a direction parallel to the row of the fans. A backup fan slidably mounted to the rail, a motor configured to control the movement of the backup fan, and a control board to determine whether there exists one malfunction fan in the fan group. When one abnormal fan exists in the fan group, the control board outputs a control signal to the motor, to enable the motor to drive the backup fan to move to a location corresponding to the abnormal fan.

Abstract: A rack server system includes a rack, a number of servers, and a power center. The rack defines a receiving space that is divided into a plurality of units. Each of the servers includes a motherboard and is received in a corresponding unit. The power center is received in at least one unit. The power center includes a plurality of cables connecting to the motherboards, respectively.

Abstract: A connector includes a main body, an electrical interface extending from a front end of the main body, and a fixing member pivotably mounted to the main body with a first end. A second end of the fixing member forms a dummy interface similar to the electrical interface.

Abstract: An electronic device includes a processor, a first storage unit, and a second storage unit. The first storage unit stores data generated by the processor in real time. The processor checks amount of storage space in use of the first storage unit, compares the current amount of used storage space of the first storage unit checked this time with a previous amount of used storage space of the first storage unit checked previously to determine whether the current amount of used storage space is greater than the previous amount of used storage space, obtains data that was stored in the storage space of the first storage unit since the previous check if the current used storage space is greater than the previously used storage space, and stores the obtained data in the second storage unit after the data is obtained.

Abstract: A dummy hard disk drive (HDD) includes a main body and two arms extending along opposite end surfaces of the main body. The arms each form a pin for fixing the dummy HDD in an HDD bracket. A connecting portion is formed on a side of the main body for connecting cables.

Abstract: A connector includes a main body, an electrical interface extending from a front end of the main body, and a fixing member pivotably mounted to the main body with a first end. A second end of the fixing member forms a dummy interface similar to the electrical interface.

Abstract: A display includes an input interface, a circuit board, a display panel, and an external memory. The input interface is electrically connected to a computer, and receives an image signal from the computer. The image signal includes a number of frames of image data. The circuit board includes a main control chip, an image processing module, and a recall button. The main control chip drives the display panel to display the frames of image data sequentially. If the computer freezes, the main control chip will control the display panel to repeatedly display a final frame of image data. When the recall button is pressed, the image processing module codes/decodes a frame of image data currently displayed on the display panel to obtain image data in a predetermined format which is stored in the external memory.

Abstract: A rack server system includes a rack, a number of servers, and a power center. The rack defines a receiving space that is divided into a plurality of units. Each of the servers includes a motherboard and is received in a corresponding unit. The power center is received in at least one unit. The power center includes a plurality of cables connecting to the motherboards, respectively.