Abstract: The disclosure provides a server including a chassis, a cabinet, and a plurality of superstructures. The chassis has an accommodating space. The cabinet is slidably connected to the chassis so as to slide in or slide out the accommodating space. The cabinet has an opening and a receiving hole communicated to each other, and the receiving hole is configured to accommodate at least one storage device. Each of the superstructures is rotatably connected to the cabinet so as to cover or open a part of the opening.

Abstract: The disclosure provides a server including a chassis, a cabinet, and a plurality of superstructures. The chassis has an accommodating space. The cabinet is slidably connected to the chassis so as to slide in or slide out the accommodating space. The cabinet has an opening and a receiving hole communicated to each other, and the receiving hole is configured to accommodate at least one storage device. Each of the superstructures is rotatably connected to the cabinet so as to cover or open a part of the opening.

Abstract: The tool-less hard disk carrier is provided and configured to accommodate a hard disk. The hard disk has a first screw hole and a second screw hole respectively located at two sides of the hard disk. The tool-less hard disk carrier includes a housing, a moving part, a first pin, and a second pin. The housing includes a first sidewall and a bottom board connected to each other. The moving part has a sliding portion and an abutting portion connected to each other. The sliding portion is slidably engaged with the bottom board. The abutting portion is bent relative to the sliding portion to face the first sidewall. The abutting portion and the housing define an accommodating space, and the accommodating space is configured to accommodate the hard disk.

Abstract: A direction-lockable seat assembly for a motor vehicle includes an upright seat post that defines a pivot axis, a seat member mounted on top of the seat post such that the seat member is rotatable about the pivot axis, and a direction-locking device that includes a locking plate, a slide guide unit, and a locking pin. The locking plate has a plate body mounted on top of the seat post and formed with a plurality of angularly spaced apart locking grooves. The slide guide unit is mounted on the seat member, and is formed with a slide channel to be aligned with a selected locking groove. The locking pin is movably disposed in the slide channel, and is operable to extend into the selected locking groove so as to arrest rotation of the seat member.

Abstract: A direction-lockable seat assembly for a motor vehicle includes an upright seat post that defines a pivot axis, a seat member mounted on top of the seat post such that the seat member is rotatable about the pivot axis, and a direction-locking device that includes a locking plate, a slide guide unit, and a locking pin. The locking plate has a plate body mounted on top of the seat post and formed with a plurality of angularly spaced apart locking grooves. The slide guide unit is mounted on the seat member, and is formed with a slide channel to be aligned with a selected locking groove. The locking pin is movably disposed in the slide channel, and is operable to extend into the selected locking groove so as to arrest rotation of the seat member.

Abstract: A cart includes a locating tube, a circular part, a bottom plate, and a control rod; the locating tube is secured on a frame of the cart; the circular part is secured at an upper end of the locating tube, and it has several gaps on an edge; the bottom plate is secured on a lower side of a seat, and it has a protruding part on a lower side; the seat is supported on the locating tube with the protruding part being held in the circular part; the control rod is pivoted on the lower side of the bottom plate, and it is normally in a first position and fitted in one of the gaps at a front end thereof, which has slopes on two lateral sides so as to become gradually narrower; the seat is angularly displaceable when the control rod is disengaged from the circular part.