Abstract: A support device is adapted to be attached on a housing body of an electronic device. The support device includes a support leg and a movable unit. The support leg includes at least one first hook engaging separably at least one first hooking groove of the housing body. The movable unit is connected movably to the support leg, and has a second hook engaging separably a second hooking groove of the housing body. The second hook is movable relative to the first hook against a resilient force of a resilient element from an engaging position, where the first and second hook are not permitted to be disengaged from the first and second hooking grooves, to a releasing position, where the first and second hooks are permitted to be disengaged from the first and second hooking grooves.