Abstract: An uninterruptible power supply, UPS, arrangement for subsea applications, including a container arranged and configured for subsea operation, and the following main modules arranged inside the container: at least one battery module of a predetermined battery capacity; at least one UPS module governing the battery module, the UPS module having a predetermined UPS capacity; at least one control module configured for interfacing and managing the battery module and the UPS module. The UPS arrangement is arranged and configured to vary its overall capacity based on at least the number of battery and UPS modules, wherein the at least one battery module and the at least one UPS module are internally arranged such that the heat losses from the UPS module are used to heat the battery module.

Abstract: An electronic device may have a housing with portions that slide relative to each other. A display may be supported on a surface of the housing such as on a front face of the housing. The housing portions may slide between an unexpanded state in which the display has an unexpanded viewable area on the front face and an expanded state in which the display has an expanded viewable area on the front face that is greater than the unexpanded viewable area. The housing portions may have interior regions that contain electrical components. The display may be formed from a flexible display substrate. A portion of a flexible display may be stored in an interior region of the housing when the housing is in the unexpanded state. In the unexpanded state, the flexible display may have one or more bends and may double back on itself one or more times.

Abstract: Example implementations relate to a compute node having a chassis with front installed trays. The chassis includes a base, a pair of walls, each coupled to a peripheral side of the base, and a first top cover portion coupled to the pair of walls to cover a portion of the chassis. The compute node further includes a plurality of first latches coupled to a rear end inner surface of the first top cover portion. The plurality of trays is slidable from a front side of the chassis and at least one tray is fastened to at least one first latch. Each tray includes a front cover, a floor coupled to the front cover, a pair of brackets coupled to the floor, a pair of risers, where each riser is coupled to a respective bracket, and a pair of GPU card assemblies, where each GPU card assembly is plugged to a respective riser.

Abstract: A method and device for controlling a distributed direct current power supply system are provided in embodiments of this disclosure. The method includes: acquiring a direct current busbar current of the distributed direct current power supply system; acquiring, according to the direct current busbar current and a rated capacity of a power conversion unit in the distributed direct current power supply system, a quantity of power conversion units that meets a power requirement of a load; and adjusting, according to the quantity of power conversion units, power conversion units that are turned on in the distributed direct current power supply system. The device is used to implement the method.

Abstract: A system for configuring an environment to provide mobile computing, the system including: one or more booms suspended from a soffit of the environment, each of the booms including a moveable arm moveable at least in part in a plane parallel to the soffit and the moveable arm having a proximal end connected to power and data cables attached to the soffit and a distal end where the power and data cables are suspended therefrom; and one or more switching hubs, each of the switching hubs are arranged to be removably mounted to a mobile station moveable within the environment, to be removably connected to the power and data cables suspended from the distal end of the moveable arm of one of the booms, and to be removably connected to at least one computer in the environment to distribute power and data to the at least one computer.

Abstract: A modular infrastructure management device comprises a housing and first modular slots disposed along at least the first edge of a base plate of the housing. The first modular slots are configured to removably receive at least one communication card module. The communication card module includes a first circuit board that is parallel to the base plate while the communication card module is removably inserted into at least one of the first modular slots. A second circuit board is disposed on the base plate of the housing and includes connectors for electrically coupling to the communication card module, wherein the second circuit board is parallel to the base plate.

Abstract: A wire harness, including: a first wire including a first core wire and a second wire including a second core wire, the first core wire and the second core wire being joined together, wherein the first core wire includes a first flat surface extending along an entire length of the first core wire in a length direction, the second core wire includes a second flat surface extending along an entire length of the second core wire in a length direction, and the first flat surface and the second flat surface are overlapped and joined.

Abstract: An appliance having: a control unit managing the operation of the appliance; at least one hydraulic component actionable for distributing water/treating liquids within the appliance; a plurality of sensors arranged for acquiring information regarding physical parameters associated with the operation of the appliance, and a module managing at least part of the water/treating liquids distribution within the appliance. The module includes the at least one hydraulic component; at least two sensors of the plurality of sensors, and a local control unit managing the operation of the at least one hydraulic component and/or receiving the information acquired by the at least two sensors.

Abstract: A server rack with a plurality of compute nodes is positioned in a facility that includes a spine and the server rack includes a middle of rack (MOR) switch located near the middle of the server rack, vertically speaking. The MOR switch includes a plurality of ports that are connected via passive cables to the compute nodes provided in the server rack. In an embodiment the passive cables are configured to function at 56. Gbps using non-return to zero (NRZ) encoding and each cable may be about or less than 1.5 meters long. An electrical to optical panel (EOP) can be positioned adjacent a top of the server rack and the EOP includes connections to the MOR switch and to the spine, thus the EOP helps connect the MOR switch to the spine.

Abstract: A server rack includes a server and a connector dock. The server includes first signal connector receptacles and first power connector receptacles. The connector dock includes blind signal connectors that mate with the first signal connector receptacles and blind power connectors that mate with the first power connector receptacles when the server is installed into the server rack. The connector dock further includes second signal connector receptacles facing a back of the server rack, where each second signal connector receptacle is connected to an associated one of the blind signal connectors; and second power connector receptacles facing the back of the server rack, where each second power connector receptacle is connected to an associated one of the blind power connectors.

Abstract: The disclosure relates to computer technical field, and provides a GPU with specific shape of casing and a host casing hardware configuration. Body of the casing of the GPU includes a rectangle of a notch, the notch is located on a corner of the rectangle and is in a right trapezoid shape. In the host casing hardware configuration, the 2U host casing is divided into front area and rear area; hard disk assembly and fan assembly are disposed on the front area; the rear area is divided into top area and bottom area; 4 GPUs and a GPU tray are disposed on the top area in a staggered relationship, and motherboard and CUP and motherboard connector disposed on the motherboard are disposed on bottom area. The disclosure provides an advantage of improving the arrangement density of the components in the host casing.

Abstract: A semiconductor device includes a first case part, a second case part coupled to the first case part to provide a case, a semiconductor module disposed within the case closer to the second case part than to the first case part, and a plate interposed between the first case part and the semiconductor module. The plate is a thermal conductor, i.e., is of material having thermal conductivity, to transfer heat generated by the semiconductor module to the case where the heat can dissipate to the outside of the semiconductor device.

Abstract: A support assembly includes a first slide rail assembly, a second slide rail assembly, a first cable management device and a second cable management device. The first slide rail assembly includes a first rail and a second rail movable relative to the first rail. The second slide rail assembly includes a third rail and a fourth rail movable relative to the third rail. The first cable management device is mounted to the second rail of the first slide rail assembly and the fourth rail of the second slide rail assembly. The second cable management device includes a first cable management arm and a second cable management arm. The first cable management arm is mounted to the first rail of the first slide rail assembly and the second cable management arm is mounted to the second rail of the first slide rail assembly.

Abstract: A smart battery power balance system and method to maximize the operating life of a mobile computing device and a portable peripheral (e.g., a peripheral having scanning capability). The mobile computing device battery and portable peripheral battery parameters such as battery level, velocity/rate of consumption and usage history are collected. A curve fitting and estimation is done to predict the empty time for complete battery discharge of the mobile computing device and portable peripheral. Based on this analysis, if the calculated empty time of the mobile computing device battery is less than the portable peripheral battery, the portable peripheral charges the mobile computing device battery and if the calculated empty time of the mobile computing device battery is greater than that of the portable peripheral battery, the portable peripheral battery does not charge the mobile computing battery.

Abstract: A shack-sensor apparatus may include a sensor configured to detect a positional state of a hard-drive drawer. The shock-sensor apparatus may also include a mounting component coupled to the sensor and configured to mount the sensor in a location to monitor the positional state of the hard-drive drawer. In addition, the shock-sensor apparatus may include a computing module, electronically coupled to the sensor, that analyzes sensor data provided by the sensor to predict a shock event of the hard-drive drawer and send, in response to predicting the shock event, a signal to at least one hard drive in the hard-drive drawer to prevent damage to the hard drive. Various other apparatuses, systems, and methods are also disclosed.

Abstract: A shelter module includes a casing and a sliding door. The casing has an outer surface and a limiting slot. The limiting slot sinks inward from the outer surface. The limiting slot has a bottom side, a through hole and a first tactile bump. The through hole is disposed on the bottom side. The first tactile bump protrudes from the bottom side. The sliding door slides between an open position and a closed position in the limiting slot to expose or hide the through hole. The sliding door has a hiding side facing the bottom side. The sliding door has its thickness reduced from the hiding side to form a relief recess and an interfering portion adjacent to the relief recess. As soon as the sliding door slides from the open position to the closed position, the interfering portion slides past the first tactile bump to generate a tactile feedback.

Abstract: A chip card assembly of an electronic device includes a casing defining an opening, a connector received inside the casing and including a tray, an electromagnet driving assembly including at least one electromagnet and a pushing member, and a control unit configured to control the electromagnet driving assembly to drive the pushing member to push the tray out of the opening. The tray includes a cover for covering the opening.

Abstract: An information handling system includes a bracket in physical contact with a server compute module. The bracket includes an adjustable guide that can rotate between a first position and a second position within the bracket. The adjustable guide is in the first position in response to a first peripheral card being inserted within the bracket, and is in the second position in response to a second peripheral card being inserted within the bracket.

Abstract: A smart battery power balance system and method to maximize the operating life of a mobile computing device and a portable peripheral (e.g., a peripheral having scanning capability). The mobile computing device battery and portable peripheral battery parameters such as battery level, velocity/rate of consumption and usage history are collected. A curve fitting and estimation is done to predict the empty time for complete battery discharge of the mobile computing device and portable peripheral. Based on this analysis, if the calculated empty time of the mobile computing device battery is less than the portable peripheral battery, the portable peripheral charges the mobile computing device battery and if the calculated empty time of the mobile computing device battery is greater than that of the portable peripheral battery, the portable peripheral battery does not charge the mobile computing battery.

Abstract: A card edge connector assembly includes a card edge connector having a housing defining a card slot receiving a paddle card of a pluggable module having a base mounted to a host circuit board holding contacts in the card slot to electrically connect to the paddle card. Support hardware is coupled to the housing having a base including a cavity receiving the card edge connector and a support beam extending from the base having a pocket receiving the pluggable module. The support beam has a support surface configured to support the pluggable module independent of the card edge connector. The support hardware has a latch coupled to the support beam latchably coupled to the pluggable module to secure the pluggable module in the support hardware electrically coupled to the card edge connector.

Abstract: A lock mechanism is provided for locking inside a casing a plurality of printed circuit boards which are connected through connectors to a backplane inside the casing. The lock mechanism has an engaging member provided with a plurality of engaging pieces respectively engageable with engaged portions formed respectively in the plurality of printed circuit boards. When the engaging pieces are respectively engaged with the engaged portions, the printed circuit boards are pressed in a direction to fit the connectors of the printed circuit boards with the connectors of the backplane.

Abstract: A structure includes a server rack, one pair of rails and one chassis. The server rack includes supporting columns spaced apart. The rails are disposed at opposite sides of the server rack. The chassis is slidably coupled between the pair of rails; the chassis includes a bottom plate, a pair of first side plates and second side plates. The bottom plate, the first side plates and second side plates are enclosed to form an accommodating space; the first side plates are disposed at opposite sides of the bottom plate. Each second side plate connects with each first side plate and an opposite end thereof is extended to a rear side of the bottom plate at an oblique angle.

Abstract: A storage system includes a holder, and a plurality of storage devices arranged along a line in the holder, each of the storage devices including first and second connection interfaces. Each of the first connection interfaces is electrically connected to a second connection interface of another storage device and each of the second connection interfaces is electrically connected to a first connection interface of another storage device, such that an electrical loop connection is formed through the plurality of the storage devices.

Abstract: A self-contained circuit board actuator including a pivot bearing connectable to a circuit board and an actuator lever pivotably coupled to the pivot bearing. The lever is moveable between a closed position and an open position. A pair of opposed pawls extend from a first end of the lever and a latch notch is formed in the first end adjacent the pair of opposed pawls. The latch notch engages a catch tab on the pivot bearing when the lever is in the closed position. The lever is coupled to the pivot bearing by a pivot member and the lever is slidable along the pivot member between a latched position and an unlatched position. The lever includes a pivot bore to receive the pivot member and a resilient member is positioned in the pivot bore around the pivot member to urge the lever toward the latched position.

Abstract: An industrial automation controller includes a housing with a forced convection chamber. First and second fans are releasably connected to the housing and are adapted to induce airflow through the forced convection chamber. The first and second fans are each connected to the housing by respective first and second latch systems that each include a primary latch and a secondary latch. The secondary latch imposes a time delay during removal and replacement of a fan to facilitate hot swapping of the fan with a replacement fan. A make-last/break-first contact system is provided for each fan such that the fan is shutdown in a controlled manner prior to removal of the fan from the housing. The controller monitors internal temperature and fan speed. The controller initiates, logs, and reports fault conditions based upon the monitored temperature and/or fan speed. The controller is shut down if the monitored temperature exceeds a select temperature level.

Abstract: A storage medium accommodating apparatus for accommodating at least one storage medium of an industrial computer is provided. The accommodating unit includes at least one side wall including at least one guide groove, where the at least one guide groove includes an engagement section; and at least one support unit, where the at least one storage medium may be accommodated inside the at least one support unit, the at least one support unit includes a guide rail that is supported in a manner of being movable on the at least one guide groove, the at least one support unit includes an elastically deformable counter-engagement section, and the counter-engagement section is automatically engaged into the engagement section in a shape-fitting manner in a state that the at least one support unit is pushed into the accommodating unit.

Abstract: A data management system includes a chassis metalwork that is electrically conductive. The chassis metalwork is electrically coupled to the power supply to form a return power path. The return power path may include a sub-chassis frame and a drawer frame. The return power path may also include uninsulated return power cables. The return power cables may be maintained in a cable chain along with outgoing power cables and data cables. The return power cables may be coupled to the drawer frame and the sub-chassis frame.

Abstract: An electronic device may include: a socket; a tray detachably received in the socket; a receiving space formed in the tray; and a mounting section formed in the receiving space, wherein the receiving space is configured to receive a storage medium having one or more connection pads formed on a first side thereof, and the mounting section is configured disposed to face a second side of the storage medium when the storage medium is received with the receiving space, the first side being opposite to the second side.

Abstract: Provided is a display device that includes an LED board on which a plurality of LED chips arranged in a matrix shape are mounted and an LED cover that covers a surface of the LED board where the LED chips is mounted and that is applied, as an LED display unit displaying a state of operation, for an electronic device, wherein the LED cover includes a front surface portion with a back surface arranged to face the LED chips, the back surface having grid-shaped ribs projected to form a plurality of recessed light guide holes at locations corresponding to the LED chips and characters printed on a front surface of the front surface portion adjacent to locations corresponding to bottom surfaces of the light guide holes, wherein each of the light guide holes is a tapered hole of which opening area is decreased toward the bottom surface, and the bottom surfaces are satin finished.

Abstract: A server includes a chassis, a power bridge module having a first power connector, a backplate having a first signal connector, a tray, a motherboard module and a signal bridge board. The motherboard module is fixed to the tray, and includes a second power connector detachably and electrically connected to the first power connector. The signal bridge board includes a second signal connector detachably and electrically connected to the first signal connector. Removal of the tray out of the chassis results in removal and electrical disconnection of the second signal connector from the first signal connector, and removal and electrical disconnection of the second power connector from the first power connector.

Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety switch system and method for a power system, including a plurality of sequentially interlocked switches capable of being operated in a predetermined sequence to isolate one or more fuses, is provided. The described safety switch system is a convenient and sequential approach to safely remove power from a system and access associated fuses.

Abstract: The present invention relates to an electronic apparatus, which integrates an adapter plate, a PCIE card and a fan into an input/output unit, communicates with other electronic elements in the electronic apparatus through the adapter plate in the input/output unit, and reasonably lays out elements in the input/output unit, so that more electronic elements can be laid out in a limited electronic apparatus case space, thus having a high utilization rate and a low cost. Moreover, the design of the internally integrated fan makes the input/output unit and the electronic apparatus have good heat dissipation effects, and the input/output unit may be designed as hot plug, facilitating replacement and maintenance of the whole input/output unit.

Abstract: According to one embodiment, a memory card includes a ground layer, a memory, a controller, a first communication unit and a second communication unit. The ground layer is provided with a first region, a second region and an opening between the first region and the second region. The memory is overlapped with the first region. The controller is overlapped with the second region. The second communication unit including a part configured to transmit/receive an electromagnetic wave.

Abstract: A multi-mode communication system for a mobile phone includes a plurality of antennas, a plurality of matching networks, each matching network connected to a respective one of said plurality of antennas, a plurality of near field devices, each near field device connected to a respective one of said plurality of matching networks, each pair of near field device and its associated matching network operative to either load modulate its antenna or generate an active magnetic field via its antenna, a plurality of switches, with one of said switches positioned between each of said matching networks and its respective antenna, and a controller for controlling the switched state of said plurality of switches such that one or more of said near field devices and their respective matching networks are selectively coupled to their respective antennas.

Abstract: A refrigerator includes a cabinet including a storage chamber, a door configured to open and close the storage chamber sliding-movably, and a guide member coupled to the door to prevent the door from shaking in a predetermined direction different from the direction of the door opening. The guide member is sliding-movable with respect to a bottom surface of the storage chamber.

Abstract: A blade of components for a computer system, intended to be inserted into a computer system rack, is disclosed. In one aspect, it includes a frame with means for electrically connecting to the computer rack, and a computer component holder having a plurality of through-slots configured to receive computer components translatably along the longitudinal direction of the slot. The component holder is movably mounted by means of a slide connection in relation to the frame, such that it can move between a first position in which the holder is inserted substantially into the frame and a second position in which the holder is at least partially removed from the frame, such that the vertical line of all of the slots is kept free along the longitudinal direction of each in order to allow the translatable insertion and extraction of computer components along the longitudinal direction.

Abstract: A charging device includes a body having a rechargeable energy storage device and a housing, an interface pivotally coupled to the housing, the interface including a first conductor and a second conductor and configured to transmit power between the rechargeable energy storage device and a device connected to the interface, a first rigid post, a first pin, a first compressible element positioned to press the first pin against the first rigid post, a second rigid post, a second pin, and a second compressible element positioned to press the second pin against the second rigid post. The interface is configured to pivot about an axis defined by the first pin and the second pin.

Abstract: A slide rail assembly for a rack system is installed to a chassis. The chassis includes a first chassis and a second chassis. The slide rail assembly includes an outer rail and an inner rail. The inner rail is movably connected to the outer rail. The first chassis of the chassis is installed to the inner rail, and the second chassis of the chassis is movably connected to the inner rail. The second chassis is movable relative to the first chassis to adjust the total length of the chassis.

Abstract: A fiber panel system includes a chassis and at least a first blade configured to moveably mount to the chassis. Each blade includes a base, a frame, and front couplers. The base of each blade defines at least one opening at a location spaced rearwardly from the front couplers. The front couplers may be smart or passive.

Abstract: A cable box docking station rack includes a frame carrying a series of shelves, and each shelf including a series of docking stations for connection with cable boxes. Each docking station includes a fixed back plate and a slide plate in sliding relation. The back plate includes a series of connectors that correspond with communications ports on the rear portion of a cable box, and after the cable box is placed into the sliding plate, it slides inwardly until the connectors engage the communication and power ports on the cable box. The rack houses a computer system, video monitors, and data entry tools, together with the docking stations, which is used for inspection and diagnostic analysis of cable boxes.

Abstract: A transferring assembly and a method for transferring onto an object a RFID identification device including of a microchip connected to an antenna made of electrically conductive material. A film of adhesive material is applied to a supporting element. The microchip is applied on the film of adhesive material in a zone of the supporting element. The antenna is formed by applying the wire made of electrically conductive material to the film of adhesive material and electrically connecting the antenna to the microchip. The zone is pressed against a surface of the object, with the RFID identification device facing the surface. The adhesive material, and/or the supporting element, are chosen so that the adhesive material has an adhesiveness on the surface of the object that is significantly greater than the adhesiveness of the film on the supporting element.

Abstract: An apparatus including: a server component bracket having: a first set of holes configured to secure a set of grommets gripping a server component; a set of connectors; and a plunger comprising a pin and configured to generate an audio verification of successful installation of the server component bracket; and a server chassis bracket having: a set of sidewalls; a second set of holes configured to secure the set of connectors of the server component bracket; a side rail configured to guide the set of connectors into the second set of holes; and an aperture configured to secure the pin of the plunger following successful installation of the server component bracket into the server chassis bracket.

Abstract: A multiple server module includes a server chassis having a bottom, and a plurality of independently-operating, single-board computer servers arranged across the bottom of the server chassis. Each server has a compact footprint on the bottom which is defined by a motherboard alone, and each server includes a solid-state storage device, a processor, a networking port, and a power port carried on the motherboard within the footprint.

Abstract: An electronic system is provided, including electronic devices, power supplies and a control module. The electronic devices each have male and female connectors, wherein the male connectors are mated with the female connectors, such that the electronic devices are overlapped in a direction and electrically connected to each other. The power supplies each are connected to one of the electronic devices, respectively, for providing power to the electronic devices. The control module has first and second modes to control the male and female connectors, wherein, in the first mode, a first electronic device of the electronic devices, which is not connected to either one of the power supplies, receives power through a first female connector of the first electronic device, and outputs power to another electronic device of the electronic devices through the first male connector.

Abstract: A server includes a storage module, a processing module, a motherboard and a fixing assembly. The fixing assembly includes a carrier, a stopper, a tray, a first locking part and a second locking part. The stopper is securely located on the carrier. The storage module is securely located on the tray. A bottom wall of the tray has a fixing hole. The stopper engages with the tray through the fixing hole to make the tray securely attached to the carrier when the tray is located at the second position. The stopper is removed from the tray when the tray is located at the first position. The tray moves between the first position and the second position when the first locking part is located at the first state. The first locking part cooperates with the second locking part to lock the tray at the second position.

Abstract: An electronic device with component detaching function includes a casing, a cover and an electronic component. An opening is formed on the casing. The cover is adapted to shelter the opening. The cover is movably disposed on the casing close to the opening, and can move relative to the casing to be switched between a first position and a second portion. The cover includes a first connecting portion. The electronic component including a second connecting portion is detachably disposed on the opening. The second connecting portion is detachably assembled with the first connecting portion. When the electronic component is separated from the casing, the electronic component utilizes an assembly of the first connecting portion and the second connecting portion to slide the cover relative to the casing, and the cover moves from the first position to the second portion.

Abstract: The present invention provides a flat panel display device, which includes a backlight system and a display panel, the backlight system including a light source, a light homogenization mechanism, and a back frame; the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source to a light incidence surface of the display panel; the back frame includes primary assembling pieces and secondary assembling pieces; the primary assembling pieces are of a number of at least two, the at least two primary assembling pieces being joined to form a main frame structure of the back frame; the secondary assembling pieces are arranged inside the back frame and joined to the back frame; some of the primary assembling pieces and the secondary assembling pieces are of first density and first strength and others are of second density and second strength; the first density is greater than the second density and the first strength is greater than

Abstract: Embodiments of an avionic media system are provided, as are embodiments of an actuated media docking station and embodiments of an over-center locking mechanism suitable for usage in an actuated media docking station. In one embodiment, the avionic media system includes an actuated media docking station and an onboard electronic device. The actuated media docking station includes, in turn, a housing assembly, a mass media device (“MMD”) receptacle coupled to the housing assembly, a connector mounted to the MMD receptacle and configured to interface with the MMD when inserted into the MMD receptacle, and an actuator coupled to the housing assembly and to the MMD receptacle. The actuator moves the MMD receptacle between: (i) a loading position in which an MMD can be inserted into the MMD receptacle, and (ii) a retaining position in which removal of an MMD from the MMD receptacle is physically obstructed.

Abstract: A tablet storage device includes a frame having a plurality of slots, at least one of which is adapted to hold a tablet. A docking station can be disposed in at least one slot. In some cases the docking station is configured to align a tablet as the tablet is positioned in the slot such that a corresponding port in the tablet aligns with, and connects to, a connector. The frame also has a surface to attach the device to a vertical surface and can have a door that can be moved from an open to a closed position and adapted to retain at least one tablet held within at least one slot when the door is closed. A power supply system and/or a network connection system can be provided with the tablet storage device.

Abstract: A server includes a casing, a bottom plate, a first hard disk module, a second hard disk module, and a lifting device. The bottom plate is disposed in the casing and configured to be sliding relative to the casing. The first hard disk module is movably disposed on the bottom plate. The first hard disk module includes a track. The second hard disk module is fixed on the bottom plate and disposed behind the first hard disk module. The lifting device moves up the first hard disk module when the bottom plate is pulled out of the casing, and the lifting device moves down the first hard disk module when the bottom plate is pushed into the casing. A drawer lifting device is also disclosed.