Abstract: A keyboard device includes a casing and at least one supporting leg. The supporting leg includes a first supporting part, a second supporting part and a pivotal shaft. The supporting leg is pivotally coupled to an accommodation space of the casing through the pivotal shaft. The pivotal shaft is rotatable relative to the casing. Consequently, the supporting leg can be switched between a stored state and a supporting state. When the supporting leg is in the stored state, the supporting leg is accommodated within the accommodation space, and the accommodation space is covered by the first supporting part and the second supporting part. While the supporting leg is switched from the stored state to the supporting state, the first supporting part is pushed into the accommodation space in response to an external force, and the second supporting part is correspondingly moved away from the accommodation space.

Abstract: A scroll mouse includes a casing, a scroll wheel mouse and a waterproof module. The casing includes a first opening and a second opening. The scroll wheel includes a first rotation shaft and a second rotation shaft. The waterproof module includes a waterproof cap and a waterproof ring. A first gap between the first rotation shaft and the first opening is sealed by the waterproof cap. A second gap between the second rotation shaft and the second opening is sealed by the waterproof ring. Since the foreign liquid is prevented from entering an inner portion of the casing, the scroll mouse has the waterproof function.

Abstract: A roller mouse includes a casing, a wheel module, a swingable assembly and an adjusting element. The wheel module includes a wheel element. The swingable assembly is fixed on the wheel module, and located near the wheel element. When the adjusting element is in a first position, the swingable assembly is contacted with the wheel element, so that the wheel module is in a first clicking mode. When the adjusting element is moved to a second position, the swingable assembly is pushed by the adjusting element, and the swingable assembly is separated from the wheel element, so that the wheel module is in a second clicking mode.

Abstract: A mouse roller module includes a roller, a swingable rod, an adjusting assembly and a positioning track. When the swingable rod is contacted with the roller at a first location, a first interference force between the swingable rod and the roller is generated. When the swingable rod is swung to a second location, the swingable rod is contacted with the roller at a second location and a second interference force between the swingable rod and the roller is generated. The adjusting assembly includes a protrusion structure. The positioning track includes a first positioning recess and a second positioning recess. When the swingable rod is contacted with the roller at the first location, the protrusion structure is positioned in the first positioning recess. When the swingable rod is contacted with the roller at the second location, the protrusion structure is positioned in the second positioning recess.

Abstract: A scroll mouse includes a casing, a scroll wheel mouse and a waterproof module. The casing includes a first opening and a second opening. The scroll wheel includes a first rotation shaft and a second rotation shaft. The waterproof module includes a waterproof cap and a waterproof ring. A first gap between the first rotation shaft and the first opening is sealed by the waterproof cap. A second gap between the second rotation shaft and the second opening is sealed by the waterproof ring. Since the foreign liquid is prevented from entering an inner portion of the casing, the scroll mouse has the waterproof function.