Abstract: Provided is a desktop holder for a portable terminal. The desktop holder for a portable terminal includes a main body and a soft member. The soft member is elastically assembled with the main body, has an opening corresponding to a shape of any portable terminal selected out of various kinds of portable terminals, and holds a selected portable terminal on the main body.

Abstract: A memory system has first and second primary memories and first and second secondary memories coupled to the first and second primary memories, respectively, the coupling comprising at least one point-to-point connection. A memory module includes at least two of the first and second primary and first and second secondary memories. A first connection element, such as a connector or solder, connects the memory module to a mother board. A second connection element, such as a connector or solder, connects at least one other of the first and second primary and first and second secondary memories to the mother board. At least one of the memories on the first memory module is coupled to at least one of the other memories. The memory system also includes a memory controller which is connected to the primary memories by a point-to-two-point link.

Abstract: A positioning member for securing in position an add-on board is proposed, which is disposed inside an electronic device. The positioning member includes a coupling portion for coupling the positioning member to the inside of the electronic device, and a block portion attached to the coupling portion for preventing the add-on board electrically connected to a motherboard installed inside the electronic device from occurring any undesirable displacement. As the block portion is capable of being resiliently movable relative to the coupling portion, it allows the engagement and disengagement of the add-on board with the motherboard to be easily carried out without use of any auxiliary tool.

Abstract: A latch for a Compact PCI board, which incorporates inject and eject and engage and disengage functions, has a low profile shape, whereof a fold-down handle operates through a total arc of 90 degrees. Enhanced electromagnetic compatibility (EMC) is provided, by more efficient EMC shielding and by reduced electromagnetic force (EMF) radiation pass-through. The latch, in its inject/eject operation, undergoes a two-phase motion, which utilizes a rotary motion to insert/extract the board from electrical connection, and utilizes a linear motion to engage/disengage the latch pawl from the chassis (keeper). A separate alignment pin block, normally carrying a lead guide pin and a seating guide pin, is independent of the structure for the base of the latch. This permits the alignment pin block to be mounted to the inside of the faceplate and the latch to be mounted to the outside of the faceplate.

Abstract: The present invention discloses a fastening mechanism, by which an expansion card can be mounted in the housing of an electronic apparatus. The fastening mechanism includes: a base disposed in the housing; a retention member having one side thereof pivotally connected to one side of the base, and the side facing the rear of the housing is provided with a slot for an expansion card to insert therein; and a push handle disposed between the base and the retention member for allowing the retention member to be elastically pushed towards the expansion card to thereby hold the end portion of the expansion card in the slot of the retention member.

Abstract: A mounting assembly includes a chassis having a wall, a fastener pivotally attached to the wall, and a cover detachably attached to the chassis. The wall forms a support portion for supporting a slot cover of an expansion card thereon. The fastener includes a pressing portion for pressing the slot cover against the support portion when the fastener is pivoted to a locked position. The cover is engagable with the fastener to secure the fastener in the locked position.

Abstract: A differential pair (200) is provided by routing a printed circuit board (202) having high density interconnect (HDI) substrate (204) with first and second metal layers (212, 218) such that a first runner (206) forms a zigzag pattern using the two metal layers while a second runner (208) forms a second zigzag pattern on the same two metal layers. The first and second zigzag patterns overlap so as to provide orthogonal signal flow.

Abstract: A card guide for mounting printed circuit boards, electronic pathway or component carrying cards, or the like, to an electronic equipment housing having a wall with a pair of openings formed to receive mounting feet provided on the card guide. The card guide body includes a card-receiving guideway on an inwardly facing side of the body and a card mounting structure on the outwardly facing side of the body. The card mounting structure preferably includes L-shaped posts or feet having longitudinally extending portions which enable the card guide to be inserted through an opening in a housing wall to a position in which the L-shaped feet interlock with the housing wall adjacent to the openings. Most preferably the card guide body is resiliently flexible and can be bowed to allow insertion into pairs of mounting openings and will spring back once inserted to secure the card guide to the housing wall.

Abstract: An ejector assembly for securing a blade in a rack and for ejecting the blade from the rack. The ejector assembly includes an ejector handle movable between a first position wherein the blade is secured in the rack and a second position wherein the blade can be removed from the rack. The ejector assembly also includes a release mechanism to hold the ejector handle in the first position. Upon actuation of the release mechanism, the ejector handle may be moved toward the second position. The ejector assembly may further include a lock mechanism to prevent actuation of the release mechanism.

Abstract: A functional module is provided for use in conjunction with an electronic equipment enclosure that includes a card cage having two end card guides and one or more middle card guides interposed between the end card guides. The functional module includes a double-wide card that is configured to be removably received in the card cage. The double-wide card includes electronic circuitry and defines a cutout configured to engage a middle card guide. When the functional module is operably positioned in the electronic equipment enclosure, the edges of the double wide card are supported by the end card guide and the cutout engages the middle card guide so that the double-wide card straddles the middle card guide and is supported thereby.

Abstract: A floating guide device provides increased thermal conductivity between a printed wiring assembly and a heat sink chassis. The guide device includes an elongated thermally conductive rod and a wedgelock used in conjunction with the rod that can be attached to the rod. The guide device can be used in an electronic assembly comprising a chassis having at least one slot, and at least one printed wiring assembly with a printed wiring board disposed in the slot. At least one integrated circuit package is electrically attached to the printed wiring board. The printed wiring board provides a thermal path to the chassis. The guide device provides one or more additional thermal paths between the printed wiring board and the chassis.

Abstract: A heat sink is configured to support an edge of a circuit card. The heat sink comprises a thermally conductive base, a plurality of thermally conductive heat dissipating fins extending from the base, and one or more recesses at least partially defined by at least one of the fins or by the base. The recesses are configured to support the edge of the circuit card.

Abstract: A fastening mechanism for an electronic device for connecting upper and lower casings of an electronic device, includes: a side frame member including an exposed surface, a first surface and an opposing second surface; a wedging portion formed on the first surface, for being coupled with a protruding edge formed on the upper casing; a stopping portion formed on the second surface, for abutting against an edge of the lower casing; and at least one locking portion formed on the side frame member, and extended toward a direction opposed to the exposed surface so as to further fasten the upper casing, the side frame member and the lower casing by means of a locking element, making the upper casing, the exposed surface of the side frame member and the lower casing form a case of the electronic device.

Abstract: A plug-in unit-mounting structure which makes it possible to efficiently mount plug-in units having different sizes in all slots. PIUs of printed board type which are different in size are mounted using respective mounting frames associated therewith. Box-shaped PIUs are also mounted using respective mounting frame associated therewith. However, no guide rail is provided on the metal shelf per se, for guiding each PIU for mounting the same therein.

Abstract: A coupling mechanism mainly includes a coupling member and two bucking blades. The coupling member has two anchor ends on two sides to anchor a plugging main board on the coupling member, and a groove on an upper side and a lower side, to hold the bucking blades. The bucking blades are squeezed and deformed when the coupling member is moved and latched on a coupling interface of an electronic device to fill the tolerance between the two, thus can prevent electromagnetic waves from leaking out. The two anchor ends are made of metal and can also prevent the electromagnetic waves from leaking out from two sides. The coupling mechanism solves the interference problem during assembly occurring to conventional coupling mechanisms that use annular conductive-foamed plastics. The cost of the coupling mechanism also decreases.

Abstract: A computer comprising a casing forming an outer appearance and having a main board attaching surface to which a main board is attached, further comprises a main board supporting unit provided on the main board attaching surface so as to support the main board, the main board supporting unit comprising a holder having a locking part, slidably combined to the main board attaching surface, and preventing the main board attached onto the main board attaching surface from moving; and a guiding part formed on the main board attaching surface at a position spaced from the main board so as to guide the holder, the locking part being locked to the guiding part.

Abstract: A folding latching mechanism and related structure. An embodiment of the folding latching mechanism includes a latch member having a claw-shaped clasp disposed proximate to a pivot member that enables a pivotal coupling about a first pivot axis. A lever arm is pivotally-coupled to the latch member about a second pivot (fold) axis that is perpendicular to the first pivot axis of the latch member. During use, the latch member is rotated about its first pivot axis via the lever arm in an extended position, whereby the latching member is securely coupled to a frame member via its clasp. The lever arm is then rotated about its fold axis and secured in place. The folding latching mechanism may be employed on an Advanced Telecom Computing Architecture (ATCA) board hosting one or more Advanced Mezzanine Card (AdvancedMC) modules, wherein the mechanism does not interfere with the I/O port interfaces for the modules.

Abstract: An auxiliary fixing mechanism is used for fixing an interface card to the housing of a computer. The auxiliary fixing mechanism includes an I/O window and an auxiliary fastener. The I/O window has a fixing slot and a first screw hole. The auxiliary fastener includes a first baffle, a second baffle, a third baffle, a fixing hook and a positioning hook. A screw is passed through the second screw hole of the auxiliary fastener in a direction that is vertical to the interface card. The bracket of the interface card is pushed and stopped by the baffles to restrict the movement of the interface card. Thereby, the auxiliary fixing mechanism can change the fixing direction for fixing the screw to prevent the prior art problem that the interface card could not be fixed to the housing via a screw due to space limitations.

Abstract: A component device carrier system includes a component device frame, a component device collar, and a clocked gear assembly providing motion in at least two directions. The component device collar is disposed around a component device. The component device collar is received in the component device frame to guide and position the component device. Gears on the component device frame mesh with the clocked gear assembly to enable motion in the at least two directions for positioning and securing the component device and for connecting and disconnecting the component device. A component carrier blade supports and arranges a plurality of component devices in at least one linear array.

Abstract: A printed board unit includes a mother board 60, and a first board unit 70-1 and a second board unit 70-2 that face each other and are vertically mounted onto the mother board 60 with connector devices 100-1 and 100-2. The first board unit 70-1 has memory mounting boards 81-1 horizontally mounted to a region near the lower end of a vertically standing daughter board 71-1. The second board unit 70-2 has memory mounting boards 81-2 horizontally mounted to a region near the upper end of a vertically standing daughter board 71-2. The memory mounting boards 81-1 of the first board unit 70-1 are arranged on the lower side, while the memory mounting boards 81-2 of the second board unit 70-2 are arranged on the upper side.

Abstract: A device is provided for coupling (i) a PCB sheet, which includes a first PCB and a space formed after removing a defective PCB from the PCB sheet, with (ii) a replacement second PCB received in the space and has a connecting part spaced from a periphery of the space by a channel. The device includes a PCB securing plate adapted to support the PCB sheet. PCB securing pins project from an upper surface of the PCB securing plate to be inserted into pin receiving holes of the first and second PCBs for positioning the PCBs. PCB securing tapes are integrally attached on the PCB securing plate for securing the PCB sheet and the second PCB to the PCB securing plate. An adhesive is adapted to be filled into the channel to couple, when cured, the PCB sheet and the second PCB together.

Abstract: An electrical power circuit assembly including an insulated metal substrate (IMS) printed circuit board (PCB), a filter (PCB), and one or more bus bars disposed between the IMS PCB and the filter (PCB), the bus bar geometry configured to reduce the inductance between semiconductor power devices on the IMS PCB and capacitors on the filter PCB. For one embodiment, low profile bus bars are used between the IMS PCB and a fiberglass PCB. The fiberglass PCB has a plurality of filter capacitors electrically connected across the bus structure. The geometry and layout of the bus bars provides a connection from the IMS PCB to the fiberglass PCB with very low parasitic inductance between surface mounted semiconductor power devices on the IMS PCB and filter capacitors on the fiberglass PCB.

Abstract: An electronic instrument system uses a “DualPlay” concept comprising first and second mutually-exclusive modes of operation. The system includes an instrument module having first and second communications channels, each for linking the instrument module to one or more processors. The first communications channel comprises a first connector attached to the instrument module for mating to a backplane connector electrically connected to traces. The system operates in the first mode when the instrument module communicates through the first communications channel. Additionally, the system operates in the second mode when the instrument module communicates through the second communications channel, the first connector is disengaged from the backplane connector and the electronic instrument is not communicating through the first communications channel.

Abstract: A method and a device for coupling a PCB sheet are disclosed. If a defective PCB is found after the manufacture of continuously arranged circuit patterns, then the defective PCB sheet portion is removed to replace it with a new PCB sheet portion. That is, a defective circuit pattern sheet 2? is removed from continuously arranged circuit patterns of a first PCB sheet 4a. After removal of the defective circuit pattern sheet 2?, the first PCB sheet 4a is position-located by means of a position locating means 12. Then the space which is formed by removing the defective circuit pattern sheet 2? is filled with a second PCB sheet 4b on which a good quality circuit pattern 2b is printed. Then the first PCB sheet 4a and the second PCB sheet 4b are coupled together by using an adhesive means 14.

Abstract: An electronics module comprises an electronics assembly having a first connector and a second connector. The first and second connectors are disposed on opposite ends of the electronics assembly. A case encloses the electronics assembly. The first connector is accessible through a first side of the case and the second connector is accessible through a second side of the case. A locking tab is disposed on the case and is biased to an extended position. A sliding member is slidably coupled to the case and is operable to move the locking tab to a retracted position.

Abstract: A card guide is used in guiding a circuit board with respect to a chassis. The card guide includes a guide rail extending along the card guide in a first direction, an end portion configured for removably attaching the card guide to the chassis, and a finger extending in a second direction. The finger has a shape and size to allow interconnection with an adjacent card guide. The finger defines an endpoint of a space allowing airflow in a third direction past the card guide.

Abstract: A rack-mounted assembly (10) comprises one or more racks, each capable of containing one or more printed circuit boards (PCB) (18), interconnected by a backplane (15) which is located along the bottom of a shelf (14). This position of the backplane (15) allows the rear wall of the rack-mounted assembly to be perforated, thereby permitting a cooling airflow for the PCBs to pass in through the front of the assembly and then out through the back. An insertion mechanism is provided to allow a PCB to be inserted into a rack. To achieve this, the PCB must first travel backwards into the rack-mounted assembly, and then downwards into engagement with the backplane (15). In one embodiment, this is accomplished by supporting the PCB from a hanger (100) which moves in and out of the rack-mounted assembly along a guide rail (45). The hanger includes slots (115) that retain pins (110) from the PCB. The slots are orientated diagonally upwards and backwards.

Abstract: A card retention device includes a latch member pivotally coupled on a side wall which is located in a chassis of a computer and is located corresponding to a distal end of an expansion card. The latch member includes a stem which has a first latch section and a second latch section on two ends. The first latch section is a stub to latch the upper edge of the distal end of the expansion card. The second latch section may be coupled with a third latch section formed on the side wall to enable the latch member to latch the expansion card and prevent the expansion card from becoming disengaging from the expansion slot where it is engaged.

Abstract: A retention device used in a circuit card of a computer is composed of a fixing board, an upper board surface of which is provided with a positioning hole having two ear parts at two sides; a positioning member, two sides of which are provided with shaft members which can be transfixed into shaft holes of the ear parts, and pressing surfaces at a lower part of which are pressed and in touch with a horizontal board surface of the fixing board. A projection piece which is extended from a metallic piece connected at a side of a circuit card is pressed by the positioning member which is rotated in the shaft holes with the shaft parts, to release the circuit card from being positioned and pressed, such that the circuit card can be easily taken out of the fixing board, thereby achieving a robustness in positioning the circuit card, along with a quick and convenient dismantling and assembling.

Abstract: A PC card frame kit for housing a printed circuit board assembly (PCBA) including a board (PCB) and a connector mounted on a back edge of the PCB. The frame kit includes a frame including first and second parallel side rails and an end rail extending between first ends of the first and second side rails. The frame defines an open end and a longitudinal slot for slidably receiving the PCB. Side panels of the PC card frame kit are then snap-coupled onto the frame.

Abstract: Reflow soldering of a variety of circuit boards (9, 11, 15) in a variety of sizes and shapes to assigned locations on the base or carrier (13) of the electronic module housing (3) is simplified by eliminating custom made metal blocks previously used to clamp the circuit boards against the carrier metal. Instead, the solder-backed circuit boards are placed in assigned positions in the module housing and the inside volume of that housing is filled (22) with particulate, such as small beads (17), covering the circuit boards, but leaving the edges of the upstanding metal shields (5 and 7) visible. A plate (21) backed foam sheet (19) is placed over the module housing (24) and clamped down (26), pressing against the beads. The clamped assembly is then heated (28) to reflow the solder, soldering the circuit boards in place.

Abstract: A printed circuit board (PCB) holder having a pair of spaced apart frames with captivating mechanisms for supporting one or more PCBs independent of the number and geometry of the PCBs. Each frame is defined by a ridge member surrounding the periphery of the frame and the ridge member has at least one captivating mechanism to engage a portion of at least one PCB. One frame holds one end of a PCB and the other frame holds the opposite end of the PCB.

Abstract: A mounting assembly for a main board in a housing of an electronic device. The main board has an edge contacting the mounting assembly. The mounting assembly comprises a base and a clip. The base is disposed on the housing. The clip is disposed in the base slidably in a first direction and a second opposite direction. When moving in the first direction, the clip fixes the main board, and in the second direction, releases the main board. An acute angle is formed between the first and second directions and the edge.

Abstract: In some embodiments, an electronics assembly may include a frame with a motherboard and a plurality of daughterboards. The frame may have an opening opposite the motherboard to allow insertion of the daughterboards into the frame or removal of the daughterboards from the frame. An injector/ejector mechanism for each daughterboard may be located on the daughterboard or the frame. The frame may further include a flange that extends along the frame at or adjacent to the opening and on which the injector/ejector mechanism of each daughterboard is attached or engages at different locations along the length thereof. The flange may be divided into separate sections that correspond to the different locations to allow the flange to flex at any location along the frame during insertion of a daughterboard without the flexing affecting the position of any adjacent location of the flange with respect to the motherboard.

Abstract: In a structure where the lid portion is mounted on the main housing body comprising apertures and in such a manner as to turn freely thereon, the concave lock portion and the locking protrusion adjacent thereto capable of locking the lid in the closed state are located in the aperture side of the main housing body. The lid portion is provided with the hooking piece comprising the spring portion and the arc-shaped protrusion. When the lid portion turns to open or close the aperture portion, the arc-shaped protrusion comes into contact with the locking protrusion under pressure with the spring portion, in order that a force opposing to the turning direction may be applied thereto before and after it passes through the locking protrusion, to keep the lid portion in two states i.e. the open state and the closed state.

Abstract: A bracket assembly and a method for using the bracket assembly to connect one or more plug-in cards to a backplane are described herein. The bracket assembly includes a frame that has two pairs of guide support arms which guide and support the plug-in card while it is being connected to the backplane. The first pair of guide support arms includes a top guide support arm positioned a predetermined distance over a bottom guide support arm both of which include a notch formed therein that is sized to receive a side edge of the plug-in card. Likewise, the second pair of guide support arms includes a top guide support arm positioned a predetermined distance over a bottom guide support arm both of which include a notch formed therein that is sized to receive the other side edge of the plug-in card.

Abstract: A card guide is provided that is suitable for use in connection with a card cage system of an electronic equipment enclosure. The card guide includes one or more engagement elements configured to interact with corresponding structure of the chassis of the electronic equipment enclosure so that the card guide lacks any degree of freedom when the card guide is positioned within a fully assembled electronic equipment enclosure. At least one of the engagement elements is configured and arranged to enage the corresponding structure of the chassis in a permanent snap-fit type arrangement.

Abstract: An apparatus for making an electrical connection with an electrical unit which has an edge portion and terminals disposed along the edge portion. The apparatus includes a supporting member and a connector supported by the supporting member. The connector has a body elongated in a longitudinal direction and second terminals disposed along the longitudinal direction. The connector slidably guides the edge portion of the electrical unit along the longitudinal direction to a first fully inserted position such that each one of the terminals of the connector faces respective one of the terminals of the electrical unit.

Abstract: An aligning apparatus comprising: a back plane, the back plane comprising at least one back plane connector; at least one daughter card, the daughter card comprising: a lower edge, the lower edge comprising a scalloped surface proximal to a rear surface of the lower edge, and a ramped surface proximal to a front surface of the lower edge; and a daughter card connector, the daughter card connector configured to be removably connectable to the back plane connector; and at least two guide rails extending from the back plane, the guide rail comprising a rear ramp and a front ramp. A method of aligning a daughter card to a back plane, the method comprising: sliding the daughter card towards the back plane; lifting the front end of the daughter; lifting the back end of the daughter card after lifting the front end of the daughter card; and providing the back end of the daughter card with a degree of freedom to lift and lower in order to align to the back plane, after lifting the back end of the daughter card.

Abstract: An apparatus for attaching and detaching a circuit board includes: a main body open at a front thereof and including a plurality of racks arranged in an interior portion thereof; a motherboard arranged at an inner rear portion of the main body; a connector arranged on the motherboard and adapted to transmit electronic signals and electrical power; a guide bracket including a clamped groove arranged in an interior portion thereof and adapted to clamp one side of a circuit board and further including a plurality of sockets arranged on a front thereof and adapted to be arranged on the front of the main body; and an ejector arranged on one side of a lower portion of the guide bracket and adapted to be pivoted by pushing and pulling to attach and detach the circuit board.

Abstract: A card-mounting rack for electronic part-mounting cards is disclosed by which a housing of a rack or the like produced in accordance with standard specifications can be used to mount a plurality of large cards in high density therein to achieve overall densification and miniaturization of a system such as a computer system. Cooling fans are provided on a front and rear faces of a housing of a rack. A mother board is horizontally placed at the center of the inside of the housing. A plurality of cards are mounted perpendicularly on top and bottom faces of the mother board using gondolas and driving mechanisms having a function for moving the cards upwardly or downwardly through a plurality of connector provided on the top and bottom faces of the motherboard. Further, spacers for stabilizing the cards are inserted on rear faces of the cards.

Abstract: A housing for an adapter module is provided with a bail latch mechanism that serves to engage and disengage the frame into which the adapter module housing fits. The housing is stamped and formed from a piece of sheet metal and the bail latch is rotatably mounted in the housing. The bail latch is movable between two positions and the bail latch engages a cam member that is stamped and formed in one side of the housing so that movement of one end of the bail latch over the cam member cams one of the two free ends of the bail latch inwardly into the housing to thereby release the housing from the adapter frame.

Abstract: A method and a device for coupling a PCB sheet are disclosed. If a defective PCB is found after the manufacture of continuously arranged circuit patterns, then the defective PCB sheet portion is removed to replace it with a new PCB sheet portion. That is, a defective circuit pattern sheet 2? is removed from continuously arranged circuit patterns of a first PCB sheet 4a. After removal of the defective circuit pattern sheet 2?, the first PCB sheet 4a is position-located by means of a position locating means 12. Then the space which is formed by removing the defective circuit pattern sheet 2? is filled with a second PCB sheet 4b on which a good quality circuit pattern 2b is printed. Then the first PCB sheet 4a and the second PCB sheet 4b are coupled together by using an adhesive means 14.

Abstract: The present invention features a novel design for forming a fiducial and pin one indicator that utilizes a single solder resist opening in a die mounting substrate to perform the combined functions of prior art fiducials and pin one indicators. Methods of fabricating a carrier substrate and fabricating a semiconductor device package using the combination pin one indicator and alignment fiducial of the present invention are also provided.

Abstract: A computer component mounting system includes two mounting frames (30) attached to two side panels (52) of a chassis (50) respectively, and a mounting bracket (10) having a main portion (12) for attaching computer components (100) such as fans (100) thereto, and two mounting portions (13) at opposite ends of the main portion. Each mounting frame includes a base plate (32) forming a positioning plate (322), and two side plates (36) each forming an oblique guide plate (362). A locking slot (364) is defined in each side plate and adjoining guide plate. Each mounting portion includes two locking tabs (140, 160) engaging in the locking slots of a corresponding mounting frame, and a positioning tab (15) joined to the positioning plate of the corresponding mounting frame to thereby secure the mounting bracket to the mounting frames. The fans are thus secured within the chassis.

Abstract: An optical transceiver providing a carrier; a cover couplable to a portion of the carrier to define a transceiver enclosure; and, an electro-optical assembly supported in the enclosure is provided. A coupling mechanism and cooperating structure are particularly adapted to define pivoting motion of the cover relative to the carrier, whereby interference of the cover and the electro-optical assembly is avoided. Methods of assembling the transceiver components are present.

Abstract: A motherboard is secured in a chassis by a spring loaded plunger. An anchor member is mounted in the chassis. The anchor member includes a ramp and a receiver. The motherboard has an opening formed therein. A first member is secured to the motherboard. A second member is resiliently mounted on the first member so that the second member extends through the opening. The motherboard is moved on the chassis so that the second member is moved in a first direction by engaging the ramp, and the resilient mounting of the second member urges the second member in a second direction into the receiver.

Abstract: A card guide is used in guiding a circuit board with respect to a chassis. The card guide includes a guide rail extending along the card guide in a first direction, an end portion configured for removably attaching the card guide to the chassis, and a finger extending in a second direction. The finger has a shape and size to allow interconnection with an adjacent card guide. The finger defines an endpoint of a space allowing airflow in a third direction past the card guide.

Abstract: A mechanism for insertion of a circuit board into a rack assembly and extraction of a circuit board from the rack assembly. The mechanism may include a pair of levers coupled to a circuit board assembly. First and second members may be coupled to each of the levers. The first member may be positionable to engage an engaging formation on a rack for insertion of the circuit board into the rack assembly. The second member may be positionable to engage the engaging formation for extraction of the circuit board from the rack assembly.

Abstract: The invention is related to methods and apparatus for inserting and/or holding electronic modules into equipment racks. For example, the electronic module can correspond to a power supply, and the equipment rack can correspond to a shelf for a standardized equipment rack. One embodiment includes a handle that is movable from a first position to a second position. A power supply is inserted into an equipment rack with a handle in a first position. The first position of the handle permits partial insertion of the power supply, thereby permitting electrical connection of pre-charge contacts. The handle is then moved to a second position, thereby pulling in the power supply and permitting regular power contacts to make an electrical connection. One embodiment further includes a tongue and groove arrangement to prevent vertical displacement of an electronic module.