In one example, an electronic device is described, which may include an enclosure having at least two openings, and at least two air flow devices disposed in the enclosure and corresponding to the at least two openings. The at least two air flow devices may be movable between a retracted position and an extended position. The at least two air flow devices can be within the enclosure in the retracted position and can be at least partially outside the enclosure through the at least two openings in the extended position.