The present invention will now be described with some preferred embodiments thereof and by referring to the accompanying drawings. For the purpose of easy to understand, elements that are the same in the preferred embodiments are denoted by the same reference numerals.

Please refer to FIGS. 1 to 3. A pull-out aiding device 100 according to a first embodiment of the present invention is configured for mounting on an object, which includes a first partitioning wall 210 or/and a second partitioning wall 220 located opposite to each other. In the object, a corresponding apparatus 300, such as a hard disk, can be mounted. The object also includes a top wall and a bottom wall (not shown), which are connected to the first and the second partitioning wall 210, 220. That is, the first partitioning wall 210, the second partitioning wall 220, the top wall and the bottom wall together define a receiving space, in which the corresponding apparatus 300 is received, and an opening communicating with the receiving space. A circuit board 400 is arranged in the receiving space and has a connection port 410 provided thereon for connecting to a corresponding connection jack (not shown) on the corresponding apparatus 300, such as a hard disk.

The object can be, for example, a chassis, a drawer, a hole, a recess, a cover or a wall panel.