Abstract: A removable hard drive tray includes a seat, a coupling plate and a coupling arm. The seat includes a bottom plate, a first side plate and a second side plate. The first side plate has a through hole. The coupling plate is disposed in an outer side of the first side plate and has a hollow slot. The coupling arm has a pivot end and a free end. The pivot end is pivoted in the hollow slot, and the free end has a latch. The free end rotates to the hollow slot and passes the through hole. Thus the hard drive is combined in the accommodating space by an engagement of the latch and the fastening hole.

Abstract: A removable hard drive tray includes a seat, a coupling plate and a coupling arm. The seat includes a bottom plate, a first side plate and a second side plate. The first side plate has a through hole. The coupling plate is disposed in an outer side of the first side plate and has a hollow slot. The coupling arm has a pivot end and a free end. The pivot end is pivoted in the hollow slot, and the free end has a latch. The free end rotates to the hollow slot and passes the through hole. Thus the hard drive is combined in the accommodating space by an engagement of the latch and the fastening hole.

Abstract: A screw-free removable hard disk case includes a carrier, a slide rail and a slide sheet. The carrier includes a first lateral plate and a second lateral plate which define an accommodation space, the first lateral plate is formed with an elastic arm disposed with an insertion pin; the slide rail is disposed at an outer side of the first lateral plate, and formed with a slide groove corresponding to the elastic arm; the slide sheet is combined between the slide rail and the first lateral plate with a sliding means and exposed in the slide groove, the insertion pin is pressed by the slide sheet for being inserted in a lock hole correspondingly formed on a hard disk, so that the hard disk can be combined in the accommodation space through the insertion pin and the lock hole being mutually buckled.

Abstract: A server disk drive holder assembly includes an outer tray, an inner tray and a latch arm. The outer tray includes a locking hole. The inner tray overlaps on the outer tray. The inner tray is movable with respect to the outer tray. The inner tray includes a fastening hole. A latch arm is pivotally disposed on an outer side of the outer tray. The latch arm includes a hook portion. When the locking hole is aligned with the fastening hole, the hook portion is inserted through the locking hole to be engaged with the fastening hole. A disk drive can be clamped between the outer tray and the inner tray. By utilizing the movable latch arm to fasten the outer tray and the inner tray, the disk drive can be quickly mounted and dismounted.