1. A storage device, comprising:a casing comprising at least two partition units and at least one guiding slot, the at least one guiding slot that is formed on one of the partition units, and provided with a detaching hole, and a receiving recess is formed between the partition units; and
at least one bracket comprising:
a rack received within the receiving recess for fixedly holding a loaded object; and
a hanging portion fixedly connected to the rack, slidably engaged with the at least one guiding slot, and releasable from the at least one guiding slot through the detaching hole; and
a stopper removably located in the detaching hole for stopping the hanging portion from moving into the detaching hole, the stopper comprising an elastic sheet and at least one stopping block, wherein one end of the elastic sheet is connected to the casing, the other end of the elastic sheet is a free end, and the at least one stopping block is disposed on the free end of the elastic sheet, and located within the detaching hole, wherein when the free end of the elastic sheet is pressed to move out the at least one stopping block from the detaching hole, the hanging portion is allowed to be separated from the receiving recess through the detaching hole.