A mount cage configured to mount disk drive to rack and including first cage part, second cage part, first positioning pillar and second positioning pillar. First cage part includes first plate portion, second plate portion, and third plate portion. Second plate portion and third plate portion stand on same side of first plate portion and spaced apart from each other. Second cage part includes fourth plate. Fourth plate is pivotally connected to a side of second plate portion located away from first plate portion to be detachably engaged with a side of third plate portion located away from first plate portion. First plate portion, second plate portion, third plate portion, and fourth plate together form accommodation space and two apertures connected to accommodation space. First positioning pillar is fixed in first positioning hole of disk drive. Second positioning pillar is fixed in second positioning hole of disk drive.

A packaging tray for a hard disk drive has a plurality of positioning holes. The packaging tray includes a box body, and the box body has a plurality of frame walls and an accommodating space surrounded by the frame walls. The box body has formed a plurality of positioning posts at a bottom of the accommodating space, and the positioning posts are disposed corresponding to the positioning holes of the hard disk drive. Therefore, the hard disk drive placed in the accommodating space will not contact dust in the box body, and the hard disk drive in the box body can avoid scratching.

A hard drive storage device comprises a hard drive enclosure (10) configured to accommodate a hard drive (20), and a hub (30) disposed in the hard drive enclosure (10). The hard drive (20) is electrically connected to the hub (30). The hub (30) comprises two or more USB interfaces (31) arranged at a side wall of the hard drive enclosure (10). The hard drive storage device integrates together a storage functionality of the hard drive and a data interface expansion functionality of the hub, and is easy to use and carry.

A hard disk storage device includes a hard disk box configured to accommodate a hard disk body, and a hub arranged in the hard disk box. The hard disk body is electrically connected to the hub. The hub is provided with two or more USB interfaces. The USB interfaces are arranged on a side wall of the hard disk box. The hard disk storage device integrates a storage function of the hard disk and a data interface extension function of the hub, and is convenient to use and carry.