Abstract: An electronic device includes a logic body, a heat dissipation fin, and a rotating bracket. The logic body has multiple first end openings and multiple first bottom openings. The first end openings are disposed on a first end of the logic body. The first bottom openings are disposed on a bottom of the logic body and are adjacent to the first end. The heat dissipation fins are disposed inside an interior of the logic body and correspond to the first bottom openings. The rotating bracket is rotatably disposed at the bottom. In a closed mode, the rotating bracket is close to the bottom and covers the first bottom openings. In an open mode, the rotating bracket is unfolded from the bottom and exposes the first bottom openings.