Abstract: An electronic device includes a casing and an expansion card. The casing includes a chassis and an installation frame. The installation frame is pivotably disposed on the chassis. The expansion card is fixed to the installation frame. The expansion card is movable along with the installation frame so as to be located in the chassis or at least partially located outside the chassis.

Abstract: An electronic device includes a casing and an expansion card. The casing includes a chassis and an installation frame. The installation frame is pivotably disposed on the chassis. The expansion card is fixed to the installation frame. The expansion card is movable along with the installation frame so as to be located in the chassis or at least partially located outside the chassis.

Abstract: A keypad includes a base, an actuator, a first and second elastic member and a pivotal mechanism. The base has a through hole. The actuator is located in through hole to be moved between initial position and pressed position. The first elastic member is connected between the base and the actuator. The pivotal mechanism is pivotably and linearly movably disposed on the actuator to be moved between withdrawn position and protruding position. The second elastic member is connected between the actuator and the pivotal mechanism. The base has stop block and recess and the pivotal mechanism has tooth. While the actuator is moved to the pressed position, the tooth is stopped by the stop block so that the pivotal mechanism is pivoted and then linearly moved to the withdrawn position, and then enters into the recess, enabling the pivotal mechanism to the protruding position and press a switch.

Abstract: A keypad includes a base, an actuator, a first and second elastic member and a pivotal mechanism. The base has a through hole. The actuator is located in through hole to be moved between initial position and pressed position. The first elastic member is connected between the base and the actuator. The pivotal mechanism is pivotably and linearly movably disposed on the actuator to be moved between withdrawn position and protruding position. The second elastic member is connected between the actuator and the pivotal mechanism. The base has stop block and recess and the pivotal mechanism has tooth. While the actuator is moved to the pressed position, the tooth is stopped by the stop block so that the pivotal mechanism is pivoted and then linearly moved to the withdrawn position, and then enters into the recess, enabling the pivotal mechanism to the protruding position and press a switch.