Abstract: An optical virtual push button touch panel includes a substrate (10), a light emitting member (11), a light guide plate (12), a light permeable plate (13), and a touch control sensing member (14). The substrate is provided with a mounting slot (100). The light emitting member is mounted in the substrate. The light guide plate defines multiple light guide structures (120). The light permeable plate is mounted on the substrate. The touch control sensing member is located between the light permeable plate and the light guide plate and defines multiple contact zones (140) aligning with the light guide structures respectively. One of the contact zones produces a coupling capacitance through the light permeable plate and drives the light emitting member to generate the light source, and one of the light guide structures converges the light source toward one of the contact zones.

Abstract: An expansion module includes a housing, at least one first wedging device, a connecting device, and a module socket. At one side of the housing, there is at least one plugging pin. The first wedging device is located in the housing. The first wedging device corresponds to the plugging pin. The connecting device has a first connecting portion and a second connecting portion. The first connecting portion is electrically connected with the second connecting portion, and the first connecting portion and the second connecting portion are located at the two opposite sides of the housing. The module socket is located in the housing. The module socket is electrically connected with the connecting device. The user can easily uninstalled or installed the expansion module, the time is reduced, and it prevents the plugging pins of the module card from being damaged due to external force.