An exemplary latching mechanism for folding drive bay door (10) includes a cover panel (12), two brackets (14), two link members (184), a rotatable member (16), and two elastic members (22). The cover panel is configured for covering an entrance of an electronic device. The cover panel forms two pivotally rotatable portions (122) on opposite ends. The brackets are fixed to the electronic device. Each of the brackets defines a guiding hole for receiving the pivotally rotatable portions of the cover panel. Opposite ends of each link member are rotatably connected to the cover panel and the rotatable member correspondingly. The rotatable member is rotatably connected to the brackets. Two ends of each elastic member resist one of the two brackets and the rotatable member correspondingly.