Abstract: A panel light guide module for a solid-state drive includes a panel shell and a light guide structure. The panel shell includes a housing and a panel combined to the housing. The panel includes a light source hole. The light guide structure includes a light guide cover combined with the housing and a light guide column positioned on the light guide cover. The light guide column includes a light-receiving surface facing the light sources and a light-emitting surface facing the light source hole. The light sources positioned on different installation surfaces include a plurality of luminous surfaces, and the light-receiving surface faces the luminous surfaces of the light sources and receive the light emitted from the light sources.

Abstract: The present invention relates to a retaining structure for securing at least one expansion card (such as a Peripheral Component Interconnect, PCI card) on a motherboard. The retaining structure includes a frame member and a handle. The frame member has a main body, and the main body has at least one outer fixing portion and an inner fixing portion. The main body has a top piece and a connecting piece. The connecting piece is arranged away from the outer fixing portion and connected to the inner fixing portion. The handle is connected to the connecting piece. Upon mounting of the retaining structure, the distance between the handle and a base plate of a housing is less than the distance between the top piece and the base plate of the housing. This retaining structure may be easily dismounted in restricted space internal of the housing.