An electronic device is provided. The electronic device includes a main body, a HDD, a frame, and two latch members. The main body defines an opening. The main body includes a first casing portion and a second casing portion defining at least one slot. The frame is capable of securing the HDD and capable of being moved into and out of the main body through the opening. Two first positioning posts protrude from the frame. Two latch members are rotatably connected to first casing portion and capable of being rotated into and out from the main body through slots. Each latch member defines a first recessed portion. Each first recessed portion accommodates a part of one first positioning post to latch the frame to the electronic device.