A mounting apparatus includes a drive bracket assembly, a back panel, and a securing member. The back panel is mounted to the drive bracket assembly along a first direction. The securing member is slidably mounted on the drive bracket assembly. The securing member secures the back panel to the drive bracket assembly to prevent the back panel moving along the first direction. The securing member is capable of sliding along a second direction that is generally perpendicular to the first direction to a position, so the back panel is capable of moving along the first direction.