Abstract: An installation structure of a data storage device used for installing the data storage device in a case includes a frame, a pair of fastening portions and a pair of ring pulls. The frame includes a bottom and a pair of side walls. Each side wall has an outer surface facing the bottom rearwardly and an inner surface facing the bottom. The data storage device is accommodated between the bottom and the side walls. The pair of fastening portions is respectively connected with a pair of end portions of the pair of side walls, extended toward a direction further away from each side wall, and inclined toward a direction each outer surface faces. The pair of ring pulls is respectively connected with the pair of fastening portions, extended toward a direction further away from each side wall, and inclined toward a direction each of the inner surfaces faces.

Abstract: A roller apparatus for a computer input device, such as a mouse, that has a sturdier support than prior art supports. A scrolling wheel carriage is supported by a PCB for greater stability. An open hook support for the hinge of a wheel carriage angles outward below a retaining point for the hinge. This combines with the hinge being hollowed out, so that upward forces due to variations in PCB thickness cause the hinge to compress while retained by the hook support. The design also provides long side arms for activating microswitches for lateral scrolling, and stoppers for preventing forward and backward slippage.