Abstract: A hard disk fixing mechanism implemented in a chasses includes a fixing frame, at least one mounting frame, and at least one fixing mechanism. The fixing frame includes a base plate and a first fixing plate arranged on the base plate. The first fixing plate defines at least one through slot. The base plate bears the mounting frame. The mounting frame mounts a hard disk. The mounting frame includes a projecting portion. The projecting portion defines a through hole. The projecting portion extends from the through slot to an opposite side of the first fixing plate. The fixing mechanism includes a sliding block. The sliding block is movably arranged on the first fixing plate and extends into the through hole to lock the mounting frame.

Abstract: A mounting apparatus used in a casing to mount a fan to a bracket and protect the electrical cables supplying the fan includes a pillar, a clipping member, and a connecting member. The pillar includes a first end and an opposite second end. The clipping member secures a cable of the fan and is fixed to the first end of the pillar. The connecting member mounting the fan is fixed to the second end of the pillar. The pillar defines a clipping slot for mounting to the bracket, the clipping slot is located between the first end and the second end.

Abstract: An apparatus for mounting hard disk drive and storage device without the use of tools includes a supporting base, a fixing arm, and a rotating arm parallel with the fixing arm. The fixing arm includes a fixing plate with an end fixed to the supporting base and first mounting pins perpendicularly connected to the fixing plate. The rotating arm includes a rotating plate with an end rotatably connected to the supporting base and second mounting pins are perpendicularly connected to the rotating plate. The rotating plate is rotatable between a closed and pin-aligned position, where the rotating plate is substantially parallel with the fixing plate, and an open position in which the mounting pins have been rotated out of alignment.

Abstract: An apparatus for mounting hard disk drive and storage device without the use of tools or fasteners includes a supporting base comprising opposite ends, elastic connecting members, and two side plates connected perpendicularly and respectively to opposite ends of the supporting base. Two elastic connecting members and an end plate connect between free ends of the pair of side plates through the elastic connecting members. Each side plate comprises one or more internal mounting pins and corresponding mounting holes are defined in sides of hard disk drive or storage device. A rotating plate is rotatable between closed and opened positions, the rotating plate can be closed to align the pins so as to clamp the device in place, or opened.

Abstract: An apparatus for mounting hard disk drive and storage device without the use of tools includes a supporting base, a fixing arm, and a rotating arm parallel with the fixing arm. The fixing arm includes a fixing plate with an end fixed to the supporting base and first mounting pins perpendicularly connected to the fixing plate. The rotating arm includes a rotating plate with an end rotatably connected to the supporting base and second mounting pins are perpendicularly connected to the rotating plate. The rotating plate is rotatable between a closed and pin-aligned position, where the rotating plate is substantially parallel with the fixing plate, and an open position in which the mounting pins have been rotated out of alignment.

Abstract: A securing apparatus for mounting a PCI or memory card comprises a mounting member and a base. The mounting member comprises a first fastening portion and a second fastening portion. The first fastening portion is connected to the second fastening portion through a fulcrum. The securing apparatus secures the memory card on an electronic device without the need for screws or other means of fixing.

Abstract: A securing apparatus for mounting a PCI or memory card comprises a mounting member and a base. The mounting member comprises a first fastening portion and a second fastening portion. The first fastening portion is connected to the second fastening portion through a fulcrum. The securing apparatus secures the memory card on an electronic device without the need for screws or other means of fixing.

Abstract: A supporting base for servers of different types and sizes includes two sliding rails and a mounting apparatus. The supporting base includes sliding portions on each side and supporting brackets corresponding to the two sliding portions. When the two supporting brackets are unmounted, the supporting base and sliding rails have a first distance, and when the two supporting brackets are mounted to the two sliding portions, the two sliding rails have a second distance.

Abstract: An air guiding duct and casing providing easy access for fan maintenance and electronic devices using the air guiding duct are disclosed. The air guiding duct includes a first guiding plate and a second guiding plate. The first guiding plate includes a first pivoting portion and first extension panels. The second guiding plate includes a second pivoting portion and second extension panels. The first guiding plate is rotatably connected to the second guiding plate, and can be in a first position to align with the second guiding plate and join each first extension panel with a second extension panel, to define air guiding channels for heat dissipation, and a second position, where the first guiding plate is tilted with a predetermined angle relative to the second guiding plate.

Abstract: A mounting apparatus for mounting a hard disk drive which does not require screws or tools includes bracket and latching unit. The bracket includes a bottom plate and parallel side plates. The several latching units are rotatably connected to a lower side of the side plate, a free end of the latching unit defines a latching portion. The side plate defines a latching slot corresponding to the latching portion, and when the latching unit is rotated to abut the side plate, the latching portion is latched in the latching slot and holds a hard disk drive strongly and stably in an receiving space defined by the bottom plate and the side plates. The electronic device is further disclosed.

Abstract: A mounting apparatus for mounting a hard disk drive which does not require screws or tools includes bracket and latching unit. The bracket includes a bottom plate and parallel side plates. The several latching units are rotatably connected to a lower side of the side plate, a free end of the latching unit defines a latching portion. The side plate defines a latching slot corresponding to the latching portion, and when the latching unit is rotated to abut the side plate, the latching portion is latched in the latching slot and holds a hard disk drive strongly and stably in an receiving space defined by the bottom plate and the side plates. The electronic device is further disclosed.

Abstract: A cabinet for installing first servers or second servers different than the first servers in size, and the cabinet includes a frame and four adjusting assemblies respectively installed to four corners of the frame. Each adjusting assembly includes a first mounting bracket fixed to the frame and a second mounting bracket rotatably connected to the first bracket. When the second bracket is rotated to being received in the first bracket, the first servers can be installed to the first bracket. When the second bracket is rotated away from the first bracket, the second servers can be installed to the second bracket.

Abstract: A cabinet for installing first servers or second servers different than the first servers in size, and the cabinet includes a frame and four adjusting assemblies respectively installed to four corners of the frame. Each adjusting assembly includes a first mounting bracket fixed to the frame and a second mounting bracket rotatably connected to the first bracket. When the second bracket is rotated to being received in the first bracket, the first servers can be installed to the first bracket. When the second bracket is rotated away from the first bracket, the second servers can be installed to the second bracket.

Abstract: A screw assembly includes a bolt, a stopping member, and a nut fitted about the bolt. The bolt includes a screw. A side of the screw forms a stopping surface extending along a lengthwise direction of the screw. The stopping member is fitted about the screw. A tab protrudes out from an outer side of the stopping member to abut the stopping surface of the screw to prevent the screw from rotating.

Abstract: A cabinet includes a board defining a through hole, a number of cables extending through the through hole, and a seal device. The seal device includes a limiting member mounted on the board, a sliding member slidably mounted to the board, and a fixing member. The limiting member defines a first receiving groove aligning with the through hole. The sliding member forms a sandwiching portion defining a second receiving groove. The sliding member is slid toward the first receiving groove of the limiting member. The first groove of the limiting member and the second groove of the sliding member sandwich the cables together to seal a gap between the cables and a sidewall bounding the through hole. The sliding member is fixed to the board by the fixing member.

Abstract: A computer-implemented method, computer-implemented system, and a computer program product for answering a database-based query of a computerized database system. The method includes: generating a canonical individual ind' with respect to a role and a concept, for an existential restriction in an ontology used in the computerized database system; converting implicit data in original data into explicit data using the canonical individual ind' and the ontology; and retrieving an answer meeting all query conditions in a query from the original data and the converted explicit data. The computer-implemented system includes: a canonical individual generation unit; a data conversion engine; and a query unit.

Abstract: A power supply unit for providing power to servers and a power supply system for servers is disclosed. The power supply unit for providing power to servers, comprises a housing; a plurality of power supplies arranged in the housing, the plurality of power supplies comprising a first output end and a second output end; a circuit board comprising a first conductive plate and a second conductive plate, the first conductive plate being electrically connected with the first output end, and the second conductive plate being electrically connected with the second output end; and an integrated management module electrically connected with the circuit board.

Abstract: The power supply device includes a main bus-bar assembly, an assistant bus-bar assembly, and a plurality of connectors being electronically connected to the assistant bus-bar assembly. The main bus-bar assembly includes a first main bus-bar and a second main bus-bar attached to the first main bus-bar. The assistant bus-bar assembly includes a first assistant bus-bar and a second assistant bus-bar attached to the first assistant bus-bar. The first assistant bus-bar is electronically connected to the first main bus-bar, and the second assistant bus-bar is connected to the second main bus-bar. Each of the plurality of connector includes a first pin and a second pin. The first pin is engaged with the first assistant bus-bar, and the second pin is engaged with the second assistant bus-bar.

Abstract: A mounting apparatus includes a bracket, a cage, and a hand. The bracket includes two sidewalls and two positioning posts extending from the two sidewalls. Each sidewall defines a first cutout. The cage secures a data storage device and defines two sliding slots and a positioning hole. The handle includes a positioning portion and two mounting portions. Each positioning post is received in each sliding slot. The handle is slidable relative to the cage between a locked position and an unlocked position. When the handle is in the locked position, the positioning portion is engaged in the positioning hole, and each mounting portion is engaged in the first cutout. When the handle is in the unlocked position, the positioning portion is disengaged from the positioning hole, the mounting portion is disengaged from the first cutout, and the two positioning post are movable in the two sliding slots.

Abstract: A power supply unit for providing power to servers and a power supply system for servers is disclosed. The power supply unit for providing power to servers comprises a housing; power supplies assembled inside the housing, each of the power supplies comprising a first power supply array and a second power supply array, each of the power supplies in the first power supply array having a first output end and a second output end, each of the power supplies in the second power supply array having a third output end and a fourth output end; a circuit broad comprising a first, a second, a third and a fourth conductive plates, the first, the second, the third and the fourth conductive plates being electrically connected with the first, the second, the third and the fourth output ends, respectively; and an integrated management module electrically connected with the circuit broad.