A mounting apparatus for mounting a drive bracket on which a protruding portion is provided, includes an enclosure, and a mounting member. The enclosure includes a base wall for supporting the drive bracket thereon, a side wall extending from one side of the base wall, and a holder extending from the side wall. The mounting member is movably attached to the holder. The mounting member includes a locking portion extending therefrom for engaging with the protruding portion of the drive bracket.