Abstract: This invention is directed to reducing the effect of shocks on electronic device components. The electronic device component may be surrounded by a boundary element operative to deform in response to impacts. By deforming, the boundary element may be operative to absorb energy received by the shock or impact without passing the energy on to the electronic device component. To maximize the effectiveness of the boundary element over a range of different impacts (e.g., strong, instantaneous impacts and weak impacts over time), a viscoelastic material may be used. The characteristic properties of the viscoelastic material may be selected based on expected impacts to the electronic device component.

Abstract: A foldable computing device with counterbalance member includes a main body, a rotary member, and a shaft. The rotary member is rotatably connected to the main body by the shaft. The main body, from top to bottom, includes a top cover, a printed circuit board, a counterbalance member and a bottom case. The counterbalance is configured to maintain contact with the printed circuit board and the bottom case. Electrostatic charges produced on the printed circuit board can be conducted to the bottom case through the counterbalance member, and then to ground.

Abstract: An electronic device enclosure includes a chassis, a drive bracket, and an air duct. The drive bracket is secured to the chassis and defines a subspace for receiving a disk drive. The air duct is rotatably secured to the drive bracket, and rotatable between a first position, where the subspace is exposed, and a second position, where the subspace is covered by the air duct.

Abstract: A shockproof assembly, preventing a flat storage device from shock damage, includes a housing, a bracket, and at least one first buffer. The housing has a bottom plate and a top plate coupled to each other correspondingly and covering the flat storage device. The bracket has a plurality of side blades extended along an extending direction, and the bracket is coupled the side wall of the flat storage device. A first buffer store space is defined among the side blades and the bottom plate of the housing. The first buffer is disposed in the first buffer store space and has a preset height for keeping a preset interval between the bottom face of the flat storage device and the bottom plate. Shock is absorbed by the first buffer during being transmitted to the flat storage device via the housing when the shockproof assembly is shaken.

Abstract: An mechanism for retaining devices in a computer system is disclosed herein. A computer storage device enclosure includes an chassis configured to house a computer storage device. The chassis includes a storage device retention mechanism. The storage device retention mechanism includes a flexible retention member disposed along and connected to an outer side wall of the chassis. The flexible retention member is configured to retain a rear corner of the storage device installed in the chassis by contacting a side, rear and upper surface of the storage device at the rear corner.

Abstract: In an example, a vibration-damping mount comprises a bolt including a threaded shaft and a bolt head fixed to the threaded shaft, and a vibration-damping base. The vibration-damping base includes a head segment that envelops the bolt head and a neck segment adjacent to the head segment and opposite to the threaded shaft. The vibration-damping base further includes a rear segment adjacent to the neck segment and opposite to the head segment. The head segment, the neck segment and the rear segment combine to form a notch configured to mate with a hole in a mounting board, such as a printed circuit board. The vibration-damping mount may be suitable to mount a mass data storage device such as a hard disk drive to a printed circuit board in a chassis system and simultaneously isolate the mass data storage device from vibrations in the chassis system.

Abstract: This disclosure includes a portable data storage device comprising a mass data storage device, a cartridge housing enclosing a mass data storage device, and a flexible interconnect. The flexible interconnect includes an external electrical connector mechanically coupled to the cartridge, an internal electrical connector mechanically and electrically coupled to a data port of the mass data storage device, and a set of flexible electrical conductors electrically coupling the external electrical connector to the internal electrical connector. The flexible electrical conductors are routed within the cartridge such that no portion of the set of flexible electrical conductors lies in a volume defined by the space between the external electrical connector and the internal electrical connector.

Abstract: A mobile phone includes a phone core with operative components thereof in a one piece phone housing that is directly molded to the phone core. Operative components that require exterior access from the housing, e.g., ear speaker, microphone, loudspeaker, SIM card reader, display, and keypad, may be shielded from molding material during the molding process by shielding boxes integrally molded into the housing and/or by shielding cores in the mold of a plastic injection molding machine. A plastic injection molding machine with shielding cores may form the phone housing as an integral structure directly to and about the phone core. A method of making a mobile phone includes plastic injection molding using insert molding technique.

Abstract: An information processing apparatus includes: a hard disk drive unit including a hard disk drive configured to read various data from and write various data in a magnetic disk incorporated therein; a housing of an apparatus main body configured to hold the hard disk drive on a substrate to be freely attached and detached; a hard-disk-drive holding member provided in the hard disk drive unit, configured to include a first anti-vibration member having vibration damping properties disposed on a predetermined surface parallel to a disk width direction of the magnetic disk and fix and hold the hard disk drive in a state in which the first anti-vibration member is sandwiched between the hard disk drive and the predetermined member, and formed of a metal member; a member to be guided provided in the hard disk drive unit and provided on a surface parallel to the disk width direction of the magnetic disk different from the predetermined surface of the hard-disk-drive holding member; and a base member provided in the h

Abstract: A hardware holding device includes a chassis, a bracket, a fastening structure and a hardware component. The bracket is fixed in the chassis. The fastening structure includes two levers each having a latch perpendicularly extending from one end of the corresponding lever, and two elastic members correspondingly arranged on the levers. The levers are rotatably mounted on the surface of the bracket. The elastic members are resiliently compressed between the surface of the bracket and the levers to keep the latches of the levers extended through the bracket and inside of the bracket thereby clasping and fixing a hardware component in the bracket.

Abstract: A hard disk device includes a hard disk having two opposite first sides, a second side interconnecting the first sides, and two corner portions defined by the first and second sides, and a slide rail mechanism including two first plates to be disposed slidably in a housing, and a second plate. Each first plate has a first section connected to the second plate, and a second section connected to the first section. The first section is spaced apart from the respective first side and is provided with a first support element for abutting against the corresponding corner portion. The second section abuts against the corresponding first side and is provided with positioning pins for engaging positioning holes in the corresponding first side. The second plate is spaced apart from the second side and is provided with second support elements for abutting against the second side.

Abstract: A computer component securing device includes a rack and a pair of rail assemblies. The rail assemblies are mounted respectively on two sides of a computer component and are disposed on the rack. Each rail assembly includes a rail and a handle pivoted to a front end of the rail. The handle is disposed to facilitate manipulation by a user. By turning the handle pivotally relative to the rail about an angle, a portion of the rail is urged in a direction away from the computer component to interferingly engage the rack so as to position the computer component in the rack.

Abstract: A mounting apparatus for an expansion card with a blocking piece is disclosed. The mounting apparatus includes a mounting bracket and a fixing piece. The mounting bracket includes a support plate with two bent portions. The fixing piece is pivotably mounted on the mounting bracket. The fixing piece includes a resisting piece, two resilient pressing pieces, and an engaging portion. The resisting piece secures the blocking piece to the support plate. The two resilient pressing pieces are connected to the resisting piece. The engaging portion retains the fixing piece to the mounting bracket. A pivot portion protrudes from each pressing piece and is received in each bent portion. The two pressing pieces are oppositely pressed to disengage the pivot portion from the bent portion.

Abstract: This disclosure includes an elastic shock mount for a mass data storage device cartridge comprising a shock mount body forming a void configured to receive a mass data storage device; and a set of elastic shock mount protrusions extending outward from the shock mount body. The elastic shock mount protrusions are configured to transfer shock forces experienced by the cartridge housing to durable portions of the mass data storage device.

Abstract: A mounting mechanism for attaching a data storage device to a chassis includes a housing, first and second driving members, a latching member, first, second, and third elastic members. The housing defines first, second and third sliding paths therein. The first and third sliding paths extend along a first direction of the housing for receiving the first driving member and the latching member. The second sliding path extends along a second direction of the housing substantially perpendicular to the first direction for receiving the second driving member. The first driving member forms an inclined guiding surface at an end thereof outside the housing. When the guiding surface is pressed down, the driving member moves inward, driving the second driving to move and disengage from the latching member, and the latching member moves along the first direction by an elastic force of the third elastic member.

Abstract: A removable data-storage device. The removable data-storage device includes a main data-storage unit, an exterior housing for containing the main data-storage unit, an elastic shock-reduction part between an inner wall of the exterior housing and the main data-storage unit for reducing a mechanical shock to the main data-storage unit by elasticity and an external connector exposed from an opening of the exterior housing. The main data-storage unit is placed at the rear of the external connector as viewed from the opening. The external connector is joined and secured to the main data-storage unit and the exterior housing. In addition, the elastic shock-reduction part is configured to deform with a movement of the main data-storage unit in the exterior housing produced by a mechanical shock and a movable range of the external connector is smaller than a movable range of the main data-storage unit.

Abstract: A disclosed rail coupling member couples a pair of rail members to be attached to lateral sides of a unit that is detachably supported in an electronic device. The rail coupling member is a flexible and discrete unit, and is not part of the rail members. The rail coupling member has end portions to which the rail members are to be joined, respectively, in a separable manner.

Abstract: A fixing apparatus includes a fixing member and a shockproof casing. The fixing member includes a first side plate, a second side plate, and a gate. Each of the first side plate and the second side plate defines a rail on corresponding inner sides for receiving a hard disk drive. Each of the first side plate and the second side plate includes a block plate fixed on a rear end thereof. One end of the gate is hinged on a front end of the first side plate, the other end of the gate latches on a front end of the second side pate. The shockproof casing includes a plurality of lock pins defined in each of two opposite inner sidewalls. The shockproof casing, of resilient material, seats the hard disk drive.

Abstract: An apparatus for securing electronic equipment. The apparatus includes an electronic device having a first mating portion. The device is removably secured within a shell, which has an open end allowing access to the first mating portion. The apparatus further includes a dock having a second mating portion and an output connector in electrical communication with the second mating portion. The dock removably receives the shell to facilitate electrical communication between the first and second mating portions. The output connector facilitates electrical communication between the electronic device and a device external to the dock. The apparatus also includes a damping mechanism to reduce vibratory forces on the first and second mating portions and relative movement between the portions.

Abstract: A mounting apparatus for attaching a data storage device to a chassis includes a latching member, first and second elastic members and a button. The latching member defines a through hole therein and forms a latching pin at a first end thereof. The button includes an abutting portion and a pressing portion extending up from the abutting portion. When the mounting apparatus is mounted to the chassis, the button is placed on a bottom side of the latching member, the latching member is movably mounted to the chassis, the first elastic member is compressed between the second end of the latching member and a baffle formed on the chassis, the second elastic member is compressed between the button and the chassis, the pressing portion of the button extends through the through hole and extending out of a top surface of the latching member.

Abstract: A mounting component for mounting an electronic part has a base that extends along a first surface of the electronic part, and a pair of left side and right side surface supporting sections that are extended from the base and bent along the right and left side surfaces of the electronic part, respectively. The pair of side surface supporting sections each have the screwing through hole at a position close to the one of the front end surface and the rear end surface. Further, a cushion member is interposed between the base and the electronic part, at a position close to the other of the front end surface and the rear end surface of the electronic part. The electronic part is screwed to the base through the surface supporting sections.

Abstract: A rear board of a blade server, a blade server and a subrack are provided. The blade server includes a front board and a back board, the rear board includes a standard ATCA interface, and the rear board is connected to the front board by the standard ATCA interface. The blade server also includes a connector configured to connect hard disks which is set on the rear board, and a portion of the rear board on which the connector is set is extended outward so as to accommodate at least two hard disks, and the at least two hard disks are connected to the connector. The blade server increases the ability of the heat dissipation ability of the front board, and the rear board supports data backup between the two hard disks and hot plug.

Abstract: A system board provided with electrical components is contained in a substrate frame, a reinforcing frame is pivotally fixed to an peripheral part of the substrate frame, and an HDD is mounted on the reinforcing frame in a vibration-damping manner. With this structure, the HDD is mounted on the system board in a floating state, and a space is formed between them as an airflow passage.

Abstract: An attachment unit for an information storage device includes a casing that houses the information storage device and a fixed base on which the casing is detachably mounted. The casing includes a casing body, a pair of rotation supporting shaft portions, a pair of first engagement portions, and a latch portion. The fixed base includes a substantially L-shaped groove, a pair of second engagement portions, and a latch fitting portion. In a state where the casing is mounted on the fixed base, (i) the first engagement portions are in partial contact with the second engagement portions in the first direction, (ii) the casing body is sandwiched in a second direction intersecting the first direction, and (iii) the rotation supporting shaft portions and the latch portion are in partial contact with the grooves and the latch fitting portion, respectively, in a third direction intersecting the first direction and the second direction.

Abstract: A fixing mechanism for fixing a storage device to an electronic device. The electronic device includes a bracket. The fixing mechanism includes two pairs of latching members extending upward from the bracket, a limiting member having a pair of resilient limiting portions, and two pairs of fixing members fixing the limiting member to the storage device. The two pairs of fixing members engage the corresponding latching members. The pair of the resilient limiting portions resists the corresponding latching members to secure the two pairs of the fixing members. The storage device is detached from the bracket depending on the resilient deformation of the resilient limiting portions.

Abstract: A fixing mechanism fixing a storage device to a bracket includes a fastening member. The fastening member is fixed to the storage device, and has a first connecting hook and a second connecting hook. A first latching portion and a second latching portion are formed on the bracket. The first latching portion defines an engaging groove. The first connecting hook is elastic and engaged in the engaging groove of the first latching portion. The second connecting hook engages the second latching portion.

Abstract: A fixing mechanism is used to fix a storage device to an electronic device. The electronic device includes a bracket. The fixing mechanism includes two latching members fixed to one of the bracket and the storage device, and a limiting member fixed to the other. The limiting member includes two side plates and at least one resilient hook. Each of the side plates defines a holding portion to receive the latching member. The at least one resilient hook engages with the latching members. The storage device may be secured by the fixing mechanism, or detached from the fixing mechanism depending on the resilient deformation or reformation of the resilient hooks.

Abstract: A computer chassis has overmolded dampeners for absorbing shock and vibration. Electronic components are hard mounted to points inside the computer chassis. Overmolded dampeners are affixed to corners, surfaces and sides of the laptop such that shock and vibration are absorbed by the dampeners before the shock or vibration can damage the electronic components. Affixing dampeners to portions of the chassis may provide shock and vibration protection with minimal weight.

Abstract: A plasma display device includes a front protective cover and a back cover that form a chassis for receiving a module in which a plasma display panel is incorporated in a chassis member. The front protective cover includes a front frame having a front frame opening for exposing a front image display region of the plasma display panel, a protective plate attached to the front frame opening of the front frame, and a protective plate pressing bracket that presses the periphery of the protective plate against the edge of the front frame opening of the front frame. A reinforcing frame is disposed between the front frame and the protective plate pressing bracket.

Abstract: A hard drive haven system for hard drives in a multiple environment that meets thermal, structural, interconnect ability, reliability, and mechanical integrity as is mandated for the life of a hard drive. The invention, as illustrated, is made from polymer materials that enhance vibration, absorption, and acoustic noise. This inventive device will reduce the cost of metal solutions as well.

Abstract: A disk drive test slot includes a housing that defines a test compartment for receiving and supporting a disk drive transporter carrying a disk drive for testing. The housing also defines an open end that provides access to the test compartment for insertion and removal of disk drive transporter carrying a disk drive for testing. The disk drive test slot also includes a mounting plate connected to the housing. One or more isolators are disposed between the housing and the mounting plate. The one or more isolators are operable to inhibit transmission of vibrational energy between the housing and the mounting plate.

Abstract: A computer drive cage (10) includes a pair of side support panels (14) that are separated by a space (38) to accommodate receipt of one or more computer drives (86). At least one of these support panels (14) includes a computer drive installation slot (46). One or more contacts (62) are aligned with and disposed outside of this slot (46) in a direction that is at least generally away from the computer drive space (38) between the side support panels (14). Each contact (62) for may be integrally-formed with its corresponding side support panel (14).

Abstract: A vibration dampening structure for a disk drive includes a bracket for receiving the disk drive and an elastic peg for dampening vibration of the disk drive. The bracket includes a pair of side panels for receiving the disk drive therebetween. An elastic clamp is formed on each side panel. A hole is defined in the clamp. The elastic peg includes a flexible head portion abutting the disk drive, and a handle portion extending into the hole. The head portion is configured for buffering the disk drive in an inner side of the bracket. The handle portion is capable of being pulled to move the head portion and the clamp away from the disk drive for disengaging the elastic peg from the disk drive.

Abstract: An all-in-one computer includes a hard disk drive (HDD), a main body, a cover, and a fasten member. The main body defines a receiving space to receive the HDD, and a fasten hole. The receiving space is bounded by a number of walls. A first raised edge protrudes from the number of walls in the receiving space. The cover includes a board, a first hook, and a mounting piece defining a through hole. The board includes opposite first and second ends. The first hook extends from the first end. The mounting piece extends from the second end. When the cover is mounted to the main body, the first hook snappingly hooks an inner side of the first raised edge, the board is stopped by the first raised edge, and the fasten member can extend through the through hole and engage in the fasten hole.

Abstract: A protective jacket for covering an electrical device is provided. The protective jacket includes a first shell and a second shell. The first shell includes a front cover, a rear cover, and an elastic strip. The front and the rear covers are formed apart from each other and have an individual hollow for receiving the insertion of the device. The elastic strip is formed between these covers. A space is defined on the first shell by theses covers, and the elastic strip together. The second shell is configured to be disposed within the space of the first shell, and has a slot for receiving the insertion of the device. Therefore, the protective jacket conforms to the shape of the device and is capable of covering the device compactly for preventing damages due to collision and avoiding dust and mist pollution so as to increase the life of the device substantially.

Abstract: A shock-absorbing device is provided. The shock-absorbing device that absorbs shock to an object includes a shock-absorbing member that surrounds the object and is elastically deformable and a switching mechanism that switches the shock-absorbing member to a flat state where a gap between the shock-absorbing member and the object is small and the shock-absorbing member is flat, or a bent state where the shock-absorbing member is bent toward the outside of the object so that the gap increases.

Abstract: An attachment assembly for mounting at least one electronic device is provided with a cradle (101) with a bottom part (109). Furthermore, the cradle (101) comprises a first arm (105) arranged such that the electronic device is fastened to the first arm (105) using the electronic device bottom fastening means, and a second arm (108) arranged such that the electronic device (150) is fastened to the second arm (108) using the electronic device side fastening means. To the cradle (101) can be mounted a fan (107) which can be placed under the electronic device and arranged between the first arm (105) and the second arm (108) of the cradle (101), such that air is blown towards the electronic device mounted to the cradle (101). To allow the air flowing from underneath of the cradle (101) to the fan (107), the cradle (101) has an opening (185) in the bottom part (109).

Abstract: A mounting apparatus for mounting a data storage device, the mounting apparatus includes a bracket and a holder. The bracket includes a bottom plate, and a first side plate extending from one side of the bottom plate. A protrusion protrudes from the bottom plate. A blocking member is formed from the side plate. The holder includes a first sidewall configured for mounting the data storage device thereto, and a latching plate extending from the first sidewall. An engaging portion is formed from the sidewall and capably of engaging with the blocking member of the side plate of the bracket. A latch portion is formed from the latching plate and capably of sliding over to engage with the protrusion of the bottom plate of the bracket.

Abstract: A holder for mounting a hard disk drive includes a main body, and two mounting bodies. The main body includes a panel, and two absorbing arms extending from opposite ends of the panel. The absorbing arms are made of dampening material. The mounting bodies are attached to the absorbing arms respectively, and are operable to fix the hard disk drive therebetween.

Abstract: Disclosed herein is a shock absorbing and indicating bumper. The bumper includes, a spherical shaped body with a surface mountable to a corner of a device to which shock is to be absorbed. The bumper includes a crushable conical member engaged with a conical recess of the spherical shaped body, the crushable conical member having a hole therethrough from the vertex to the center of the base, and a shell with a substantially hollow semispherical shape slidably engaged with a surface of the spherical shaped body. The bumper further includes a rigid shaft with a first end fixedly attached to a central portion of the hollowed side of the shell and a second end pivotally engaged with the spherical shaped body at substantially the center of the spherical shaped body, the shaft extending through the hole in the crushable member and aligned thereby.

Abstract: A rugged hard disk drive storage assembly is disclosed. The rugged hard disk drive storage assembly includes an enclosure capable of containing multiple hard disk drives. The enclosure also contains multiple shock and vibration absorbers that are configured to elastically support all the hard disk drives contained within the enclosure. The multiple shock absorbers protect the delicate electronic hard disk drives and their sensitive information from shock and vibration damage, even when the enclosure has been removed from the drive container, and is being carried away by personal in a harsh combat environment. In addition, the enclosure is hermetically sealed such that the hard disk drives are isolated from external environment.

Abstract: A vibration dampening structure for a disk drive includes a bracket for receiving the disk drive and an elastic peg for dampening vibration of the disk drive. The bracket includes a pair of side panels for receiving the disk drive therebetween. An elastic clamp is formed on each side panel. A hole is defined in the clamp. The elastic peg includes a flexible head portion abutting the disk drive, and a handle portion extending into the hole. The head portion is configured for buffering the disk drive in an inner side of the bracket. The handle portion is capable of being pulled to move the head portion and the clamp away from the disk drive for disengaging the elastic peg from the disk drive.

Abstract: A novel information storage device is disclosed and claimed. The information storage device includes a disk drive and a sheet metal support attached to the disk drive. The sheet metal support includes a plurality of sheet metal projections, each including a major surface. Each of at least two of the plurality of sheet metal projections includes at least one tab bent out of a plane that includes the major surface of that sheet metal projection. The information storage device also includes a plurality of elastomeric inserts. Each of the plurality of elastomeric inserts includes a cavity sized to receive one of the plurality of sheet metal projections. The information storage device also includes a housing. The housing includes a plurality of receptacles, each sized to receive one of the plurality of elastomeric inserts.

Abstract: The present invention relates to a data storage device and a support therein. The support is provided with a hollow portion. The hollow portion is provided with a damping spacer therein for attenuating vibration, thereby to reduce the lateral space occupied by the lateral sides of the support, and to increase the usable lateral space for accommodating electronic device and thus to increase the number of the accommodated electronic devices.

Abstract: An impact buffer having a high buffering effect includes two or more impact buffering members with different hardness, contacted with at least one surface of a side surface part of an HDD unit positioned orthogonally to the rotation surface of a magnetic disk of the HDD unit, supports the HDD unit, buffers an impact applied to the HDD unit by expansion and contraction, further moderates the rotation of the HDD unit in the direction causing a head arm to move onto the disk at rest, prevents the head detachment, and can overcome the weaknesses of the head arm and an inertial latch structure.

Abstract: According to one embodiment, a display apparatus is provided with a support base including an upright wall and a support wall projecting horizontally from the upright wall, a holder holding a read/write device, a mounting member including a first portion opposed to the holder from above and a second portion horizontally opposed to the upright wall, a first elastic member interposed between the support wall and the holder, a second elastic member interposed between the first portion of the mounting member and the holder, and a fastening member fixing the second portion of the mounting member to the upright wall in a direction perpendicular to a back surface of a display panel. The first elastic member is pressed toward the support wall by a weight of the read/write device.

Abstract: A hermetic seal is provided for sealing discrete openings in a disk drive, such as an opening made in a base plate of the drive for a spindle motor shaft and openings made in the base plate for spindle motor lead wires. The hermetic seal for the spindle motor shaft comprises an undercut made in the portion of the spindle shaft that is secured to the base plate, and an epoxy material fills the gap between the surface defining the opening and the undercut made in the spindle motor shaft. Epoxy is also used to seal the openings made for the motor lead wires. The invention also comprises the method by which the base plate casting may be sealed by a two-time resin impregnation process which fills exposed pores on the surfaces of the castings.

Abstract: A Hard Disk Drive anti-shock and anti-vibration device and a Data Storage Device consisting of a HDD and the HDD anti-shock and anti-vibration device are described. The HDD anti-shock and anti-vibration device includes a packaging paper and foam. The foam is adhered on the packaging paper. When this packaging paper, with the foam adhering onto it, is folded, it can wrap the HDD in the foam. This HDD anti-shock and anti-vibration device can prevent the HDD from damage when the HDD is accidentally dropped or bumped and has excellent anti-shock and anti-vibration effects.

Abstract: An enclosure for storage devices having at least one mounting surface and a viscoelastic layer disposed between a first layer and a second layer of the mounting surface. A receiver secured to the mounting surface within the enclosure receives a storage device carrier that retains a disk drive and positions the storage device carrier within the enclosure. Clip-on damped springs, coupled to the storage device carrier, guide the storage device carrier through the receiver and couple the storage device carrier to the mounting surface(s). A bezel of the storage device carrier is configured to receive a key in one of a plurality of key positions, with each key position corresponding to a particular disk drive/enclosure chassis interface.

Abstract: A hard disk bracket for fixing a hard disk defining a plurality of positioning holes in two opposite sidewalls thereof includes a chassis and two substantially parallel rows of fixing members projecting from the chassis, spaced from each other, and receiving the hard disk therebetween. Each row of the fixing portion includes at least resilient two limiting portions each including a positioning pin received in the corresponding positioning hole to fix the hard disk and at least one supporting portion including a supporting plate parallel to the chassis to support the hard disk. The at least two limiting portions align with the at least one supporting portion. A distance between the surface of the chassis and the positioning pin is greater than that between the surface of the chassis and the supporting plate.