Abstract: A device for mounting a riser card includes a base board forming two rods, a motherboard forming an expansion slot to connect the riser card, and a fixing member having two legs at opposite ends. The rods extend through the motherboard and are positioned at opposite ends of the expansion slot. Each rod contains a resilient member inside, and a ball mounted to the resilient member and partly extending out of the rod. The riser card is fixed to the fixing member. Each leg defines a cylindrical hole fitted about one of the rods. The balls partly extend out of the corresponding rods and block tops of the corresponding legs.

Abstract: An electronic device includes a chassis, a circuit board, a supporting bracket, a latching member, and a first connector. The chassis includes a bottom wall. The circuit board is mounted on the bottom wall, and includes a second connector. The supporting bracket is mounted on the bottom wall, adjacent to the second connector. The latching member is slidably mounted to the supporting bracket between a first position wherein the latching member is away from the first connector and located at a side of the supporting bracket, and a second position where the latching member extends out of the supporting bracket and abuts against the first connector toward the second connector.

Abstract: A secure switch module to allow only authorized keyholders to power on an electronic device includes a lock, a key matching the lock, and a power switch. The lock includes a first lock pin electrically connected to a ground pin of a motherboard of the electronic device, and a second lock pin. The power switch includes a button, a first elastic conductive sheet electrically connected to the second lock pin, and a second elastic conductive sheet electrically connected to a power on pin of the motherboard. When the is engaged with the lock and the button is pressed, the first lock pin is electrically connected to the second lock pin, the first elastic conductive sheet is electrically connected to the second elastic conductive sheet, the power on pin receives a low level signal, and the electronic device is turned on.

Abstract: An electronic device includes a chassis and a handle. The chassis includes a side plate. Two first protrusions protrude from the side plate. Each first protrusion includes a neck and a head. The handle includes a main body. The main body includes two opposite end walls, and two mounting portions extending from the end walls. A first hooking slot is defined in each mounting portion. Each first hooking slot includes a first slot, and a second slot communicating with a bottom of the first slot and narrower than the first slot. A resilient tab is fastened to each end wall. A stop tab extends from each resilient tab. The first protrusions are operable to extend through the first slots and move toward the second slots. The necks engage in the second slots. The stop tabs block tops of the heads.

Abstract: A jumper assembly includes a connector and a jumper. The connector includes a main body, and a number of pins attached to the main body and arranged a row. Two hooking slots are defined in opposite sides of the main body. The jumper includes a conductive tab formed at a bottom of the jumper, and two hooks formed at opposite sides of the jumper and slidably engaging in the hooking slots. When the jumper is slid to allow opposite ends of the conductive tab to contact two neighboring pins of the number of pins, the conductive tab connects the neighboring pins. When the jumper is slid to allow a middle of the conductive tab to contact one of the pins in the middle, the conductive tab do not contact any other pin.

Abstract: A mounting apparatus for fixing a fan includes a chassis and two fixing members. The chassis includes a fixing board defining a vent and forming two L-shaped hooks at opposites sides of the vent. Each fixing member is pivotably attached to opposite sides of the end board. The fixing members each include a flange located between the corresponding hook and the fixing board.

Abstract: A mounting device for positioning an expansion card includes a positioning apparatus and a slide apparatus. The positioning apparatus includes a positioning case. The positioning case includes a connecting plate and an installing plate extending out from an end of the connecting plate. The slide apparatus includes a slide case slidably connected to the connecting plate and a latching member. The slide case includes a positioning portion facing the installing plate. The latching member is mounted to the positioning portion. The latching member defines a latching slot facing the installing plate. A first end of the expansion card is installed to the installing plate. The slide case is slid relative to the positioning case, until a second end of the expansion card is inserted into and held by the latching slot.

Abstract: A jumper assembly includes a connector and a jumper. The connector includes a main body, and a number of pins attached to the main body and arranged in a row. The jumper is slidably mounted to the connector. The jumper includes a conductive tab on a bottom of the jumper. When the jumper is slid to allow opposite ends of the conductive tab to abut two neighboring pins, the conductive tab electrically connects the neighboring pins. The jumper may slid be to a position where no pins are electrically connected to each other.

Abstract: An enclosure includes a bottom plate, a cover, a number of parallel sidewalls perpendicularly connected between the bottom plate and the cover, and a backplane perpendicularly mounted to the bottom plate and adjacent to the sidewalls. Each of the sidewalls includes a hook. The backplane defines a number of locking slots for receiving the hooks of the sidewalls. A latch member is secured to the backplane. The latch member includes a locking board which is movable back and forth. The locking board forms a stopping portion and a supporting portion. A tongue extends from a rear side of the cover. When the locking board is moved forwards to a locking position, the stopping portion abuts a rear end of the abutting tab, and the supporting portion abuts a bottom side of the abutting tab.

Abstract: An expansion card module includes a bracket, a connection circuit board with a socket, and an expansion card. The bracket includes a bottom wall and a sidewall extending from a side of the bottom wall. The connection circuit board is mounted to the bottom wall. The expansion card includes a blocking piece attached to a first side of the expansion card. The expansion card is inserted in the socket. The blocking piece is positioned to the sidewall. A clipping member is set on the bottom wall away from the sidewall, for clipping onto a second side of the expansion card opposite to the first side.

Abstract: A backplane includes a main body with a top side, a bottom side, and two ends connected between the top and bottom sides. A first connector is arranged on a first surface of the main body, and a number of second connectors are arranged on a second surface of the main body opposite to the first surface. A first edge connector is attached on one of the ends the main body, and a first socket is attached on the other end of the main body. The second connectors are coupled to a number of hard disk drives. The first socket is electrically coupled to the first edge connector and the second connectors.

Abstract: A mounting apparatus for fixing a conversion card to a motherboard of a chassis includes a main board defining an opening and an assistant member. The conversion card is mounted to a bottom surface of the main board. Two inserting pieces extend down from opposite ends of the main board to be detachably engaged in the chassis. The assistant member includes a fixing portion mounted to the bottom surface of the main board and a handle pivotably mounted to the fixing portion. The handle includes an abutting portion and an operation portion opposite to the abutting portion. The operation portion is operated up through the opening to pivot the handle. The abutting portion abuts the motherboard to move the mounting apparatus together with the conversion card away from the motherboard.

Abstract: An airflow guide cover includes a top wall, a first sidewall and a second sidewall extending down from opposite sides of the top wall, and an intrusion switch. The intrusion switch includes a detection switch mounted to an inner surface of the first sidewall, a connector, and a cable connected between the detection switch and the connector. A through hole is defined in the top wall. A probe capable of moving up and down is mounted on a top of the detection switch and extends through the through hole.

Abstract: A connector assembly includes a connector and a fixing plate. The connector includes a block, a connector body formed on a front surface of the block, a protrusion extending from a top of the block. The fixing plate defines an opening through which the connector body extends, and a notch communicating with the opening for the protrusion extending through. A resilient piece slantingly extends toward a first end of the opening from a second end of the opening opposite to the first end. The connector pushes the resilient piece toward the fixing plate, and then the connector is slid along the opening toward the first end of the opening, to allow the protrusion to engage with a front surface of the fixing plate. The resilient piece is restored and abuts an end wall of the block.

Abstract: An assisting apparatus for unplugging a connector from a socket of an electronic device includes a fixing arm mounted to the electronic device adjacent to the socket, a press arm, and a connection piece connected between the fixing arm and the press arm. The press arm is capable of being moved to contact and press a resilient plate of the connector that is engaged with a sidewall bounding the socket to allow the resilient plate to disengage from the sidewall bounding the socket.

Abstract: A connector assembly includes a connector and a fixing plate. The connector includes a block, a connector body formed on a front surface of the block, a protrusion extending from a top of the block. The fixing plate defines an opening through which the connector body extends, and a notch communicating with the opening for the protrusion extending through. A resilient piece slantingly extends toward a first end of the opening from a second end of the opening opposite to the first end. The connector pushes the resilient piece toward the fixing plate, and then the connector is slid along the opening toward the first end of the opening, to allow the protrusion to engage with a front surface of the fixing plate. The resilient piece is restored and abuts an end wall of the block.

Abstract: An electronic device includes an enclosure with a bottom wall and a sidewall, a motherboard mounted on the bottom wall, an expansion card, and an expansion unit. The sidewall defines a first opening and a second opening. The expansion card includes an edge connector, a number of first sockets exposed through the first opening, and an expansion socket unit. The expansion socket unit includes a second socket. The expansion unit includes an expansion socket exposed through the second opening. The expansion socket of the expansion unit is electrically connected to the second socket by cables.

Abstract: A device for mounting a connector includes a base board forming two rods, a motherboard supporting the connector, and a fixing member including a main body and two legs. The rods extend through the motherboard, positioned at opposite sides of the connector. Each rod includes a resilient member, and a ball mounted to a distal end of the resilient member and partly extending out of the rod. Each leg includes a fixing piece defining a through hole fitting about one of the rods. The balls partly extend out of the rods to block tops of the corresponding fixing pieces. The connector is sandwiched between the fixing member and the motherboard.

Abstract: An apparatus for mounting a hard disk drive (HDD) includes a base board and a casing for receiving the HDD. A number of engaging portions and a holding portion protrude from the base board. The holding portion defines a through hole. The casing includes a bottom wall defining a number of fixing holes and a front wall perpendicular to the bottom wall. Each fixing hole includes a first hole and a second hole communicating with the first hole. A width of the first hole is greater than a width of the second hole. A fixing member is mounted on an outer surface of the front wall. The engaging portions extend through the first holes, respectively. The casing is then slid toward the holding portion, until the fixing member engages in the through hole and the engaging portions engage in the corresponding second holes.

Abstract: A device for mounting a riser card includes a base board forming two rods, a motherboard forming an expansion slot to connect the riser card, and a fixing member having two legs at opposite ends. The rods extend through the motherboard and are positioned at opposite ends of the expansion slot. Each rod contains a resilient member inside, and a ball mounted to the resilient member and partly extending out of the rod. The riser card is fixed to the fixing member. Each leg defines a cylindrical hole fitted about one of the rods. The balls partly extend out of the corresponding rods and block tops of the corresponding legs.