A mountable unit loading/unloading mechanism is provided for loading a hard disk
drive unit into and removing a hard disk drive from an opening of a mount assembly.
The loading/unloading mechanism includes a stationary plate secured to the hard
disk drive unit, and a movable plate that has an elastically displaceable portion
and can be slid with respect to the stationary plate in a direction of insertion
into the mount assembly and in the opposite direction, which is a removal direction.
When the hard disk drive unit is loaded into the mount assembly, the elastically
displaceable portion is displaced outwardly and presses against the inner side
walls of the mount assembly to lock the hard disk drive unit to the mount assembly.
To draw out the hard disk drive unit from the mount assembly, the movable plate
is pushed in the insertion direction toward the back of the mount assembly to displace
the elastically displaceable portion inwardly, releasing the contact between the
inner side walls of the mount assembly and the elastically displaceable portion.