A fixing mechanism includes a plurality of fixing members, a limiting member, two first supporting members extending from the bracket, two second supporting members formed in the bracket and opposite to the first supporting members, and a latching member adjacent to the second supporting members. The limiting member includes a resilient sheet and a latching portion extending from the resilient sheet. The limiting member is fixed to the storage device with the fixing members at opposite sides of the storage device. The fixing members of one side of the storage device engage with the first supporting member. The fixing members of the other side of the storage device engage with the second supporting member. The latching member is latched with the latching portion of the limiting member, such that the storage device is mounted between the first and second supporting members.