According to one embodiment, an electronic device includes: a main body; a switch; and a movement support portion. A component is detachably installed in a component installation portion of the main body. The switch includes a base and a movable portion. The switch becomes an ON state when the movable portion is moved relatively closer to the base. The movement support portion supports the switch so as to permit reciprocal movement of the switch along a direction in which the movable portion is moved closer to the base, and is moved to one of directions of the reciprocal movement by a predetermined ON operation. While the component is installed in the component installation portion, the switch becomes the ON state when the switch is sandwiched between the component and the movement support portion, and when the movable portion is moved relatively closer to the base.