Abstract: A mouse is disclosed to include a mouse body, which has a coupling structure on the top and two accommodation open chambers respectively at two sides of the coupling structure for storing different items, and a movable cover module, which has a top cover and a coupling structure fastened to the top cover and coupled to the coupling structure of the guide structure for allowing movement of the top cover relative to the mouse body selectively to a first open position to close the first accommodation open chamber and to open the second accommodation open chamber, a second open position to close the second accommodation open chamber and to open the first accommodation open chamber, or a closed position to close the first and second accommodation open chambers and to keep storage items in the accommodation open chambers from sight.

Abstract: An input device having an extendible body or housing suitable for a hand-held operation. The input device includes a housing assembly including a palm-rest section and a base section opposite to the palm-rest section, a switch mechanism accommodated in the housing assembly and including an operating section arranged adjacent to the palm-rest section, and a motion detecting mechanism accommodated in the housing assembly and including a detecting section arranged adjacent to the base section. The housing assembly includes a plurality of cover members configured by dividing the palm-rest section and the base section into plural parts while keeping a condition where the palm-rest section and the base section are integrally associated with each other. The housing assembly also includes an inner casing at least partially enclosed within the plurality of cover members, and a link arrangement for linking the plurality of cover members with the inner casing.