Abstract: Provided is an electrical connector for electrically connecting a plug assembly to a PCB. The electrical connector has a base mounted to the PCB, which has an upper surface and a lower surface opposite to the upper surface, a plurality of conductive contacts received in the base with partly extending above the upper surface, and a cover mounted on the upper surface of the base and having peripheral walls, a first and second surface. The base defines a plurality of incontinous standoffs extending from the upper surface of the base.

Abstract: A connector and the housing thereof, which is equipped with at least one light emitting element having at least one lead, are disclosed. The connector includes at least one connecting base, at least one light emitting element, and a housing. The housing covers at least a portion of the connecting base and has a body and at least one fastening structure. The light emitting element is accommodated in the body, and the fastening structure is connected with the body and fastens the lead of the light emitting element so as to connect and fix the light emitting element with the body.

Abstract: A device for securing a cable plug within a socket of an apparatus such as a USB plug within the USB port of a computer. A housing having an interior chamber is placed over the plug by sliding the cord through an axial slot formed in the housing, with the plug cord extending through an end opening of the housing. A retainer clip or collar having a U-shaped channel formed about an inner end periphery is slid over and along the housing and mates with a complementary shaped channel formed in the housing to lock the clip and housing together. A pair of adhesive pads are mounted on the ends of the pair of arms extending outwardly from the retaining clip for attachment to the apparatus adjacent the plug receiving socket.

Abstract: A burn-in board connection device includes a first connection unit to hold a burn-in board and move in a first direction perpendicular to the burn-in board that is inserted in a chamber of a burn-in test device, a second connection unit to move in a second direction parallel to the burn-in board to attach/detach the burn-in board that is held by the first connection unit to/from a connector disposed in the chamber. A burn-in board connection method includes coupling a finger to the burn-in board by moving the finger in a first direction, attaching the burn-in board to a connector by moving the finger in a second direction, and driving the finger by converting a rotation of a servo motor into a linear movement of the finger.

Abstract: A contact terminal for an electrical connector includes a mating section (21) defining a receiving cavity adapted for receiving a mating component. The mating section includes opposed side walls having thereon protrusions (210) extending into the receiving cavity. The protrusions define thereof mating surfaces adapted to engage the mating component. This configuration of employing surface engagement has the advantage of attaining reliable mechanical and electrical connection between the mated connector and component over the prior art of employing point engagement.

Abstract: A protective bridge is provided between a pair of side covers on a rear side of an outer housing in an inserting direction of a terminal so that the protective bridge is nearer to an inner housing in a mounting direction than a terminal receiving chamber is when the inner housing is in a provisional locking position with the outer housing. A beam formed on a rear part of the inner housing protrudes downwards in the mounting direction so that the protective bridge overlaps the beam when the inner housing is locked with the outer housing. The protective bridge and the beam have a first retaining protrusion and a second retaining protrusion, respectively, by virtue of which full locking between the inner housing and the outer housing can be made more reliable.

Abstract: An apparatus and method for installing an electrical support structure, such as a printed circuit board or card in a computerized device, are disclosed. In at least some embodiments, the apparatus includes a connector assembly that includes a first structure having a first guiding surface, a second structure having a second guiding surface, a third structure having at least one additional guiding surface that interfaces the other guiding surfaces, and an electrically conductive component supported by at least one of the structures. Movement of the first structure in relation to the second structure in a first direction causes additional movement of the third structure in a second direction due to interaction among the guiding surfaces. Further, at least a portion of the component moves, in response to the additional movement, to or away from a first position at which the component is capable of establishing an electrical connection.

Abstract: A cable connector for a vehicle door has a first connector including a first contact terminal and a fitting member. The fitting member has at least one cam recess, at least one locking recess, and at least one elastic member. The elastic member has at least one latching recess that engages an edge of a connecter mounting opening of a panel of a vehicle body. The contact terminal and the fitting member have a flange with a waterproof seal provided there between. A second connector is engaged with the fitting member of the first connector. The second connector includes a second contact terminal and a slide lever. The slide lever has at least one guide protrusion and at least one locking protrusion. The slide lever is slideable to move the guide protrusion along the cam recess and lock the locking protrusion in the locking recess.

Abstract: In a connector including at least one contact and a housing holding the at least one contact, a locking member is received in a lock receiving portion of the housing and serves to lock a fitted state with a mating connector. The locking member includes a shaft portion. The lock receiving portion includes a bottom surface faced to the shaft portion in its axial direction and a side surface for guiding rotation of the shaft portion. At least one of the locking member and the lock receiving portion includes a spring portion pressing the shaft portion towards the bottom surface.

Abstract: A recording medium drive unit includes an insertion opening through which a recording medium is inserted, a holder receiving the recording medium inserted through the insertion opening, a connector, a holder drive part moving the holder to a loading position so that the recording medium is connected to the connector, and a clamp mechanism pressing opposing sides of the recording medium when the recording medium is inserted into the holder. The clamp mechanism is provided to a side of the holder so as to be slidable thereon, and holds the recording medium by the opposing sides thereof.

Abstract: A connector has lever-mounting portions (22) on side surfaces of a female housing (5), and forwardly-open introduction grooves (23) penetrate through the lever-mounting portions (22). A lever (21) is mounted to the lever-mounting portions (22) and has a rotary shaft (24) with a gear piece (30) for engaging a tooth (7) of a male housing (1). A projection (31) is disposed on the lever (21) rearward from the rotary shaft (24). The lever (21) is slid along outer surfaces of the lever-mounting portions (22) with the rotary shafts (24) and the projections (31) fit in the introduction grooves (23). The rotary shafts (31) fit in return prevention portions (25) at the ends of the introduction grooves (23) to prevent the lever (21) from returning to an initial position. The lever (21) can be rotated to connect the housings (1, 5).

Abstract: A mount for a computer drive. The mount has a base structure having a plurality of lateral retainers and a top structure mountable to the base structure over a drive region. The top structure also has an arcuate drive interface extendable into the drive region.

Abstract: In one embodiment of the invention, the apparatus includes a socket connector. In one embodiment of the invention, the socket connector is to connect to a circuit board. The socket connector includes a housing to contain contacts, a socket disposed within the housing to receive an add-in card, and a retaining tab coupled to the housing to retain the add-in card in the socket. The retaining tab includes a lobe to mate with a retaining notch of the add-in card.

Abstract: A smart card connector has a housing (11) formed by an insulative contact holder (12) and a sheet metal cover (14) that has an upper plate (46) lying above an upper face of the contact holder, to form a card-receiving cavity (30) between them. A wire spring (16) has a spiral wound planar main portion (141) that is mounted to lie on the upper surface of the sheet metal upper plate (46). The wire spring has a first end portion (144) fixed to the cover and has a second end portion (158) with a right angle bend (160) leading to a downwardly-extending ejection spring part (162). The ejection spring part extends though a slot (66) in the cover upper plate portion and into the cavity to lie in the path of the card leading edge.

Abstract: An interface card connector having a slotted seat and a locking mechanism having an end for connecting with the slotted seat. The locking mechanism is provided on the top thereof with a hook with an inclined surface, in order to guide an interface card downwardly for engaging into a “U” shaped notch provided on the lower portion of one side of the interface card, thereby the interface card is fixedly connected with the slotted seat; the locking mechanism is provided on the bottom thereof with an abutting portion extending upwardly to an angular direction, so that when the moving and holding portion of the locking mechanism is moved, the abutting portion pushes the interface card upwardly to release it from the slotted seat easily. The connector is suitable for use as an interface card connector to connect an electrically connecting interface card with a printed circuit board of a mainframe of a computer.

Abstract: An attachment for a tool used to attach and remove load break elbows and protective caps from bushings disposed on a transformer is provided. The tool attachment includes an elbow engaging member that is positionable around a load break elbow or cap fixed to a bushing. The engagement member is fixedly secured to a horizontal bar that includes a number of aligned openings extending through the bar. These openings are selectively alignable with a pair of openings disposed on a vertical bar to pivotally attach the vertical and horizontal bars to one another. The vertical bar also includes an opening through which a pulling eye on the elbow or cap can extend when the tool attachment is positioned on the elbow or cap.

Abstract: A connector is provided to reduce the risk of erroneous ejection of a card from a card connector during use thereof. A stopper member is rotatably mounted on a knob of an ejecting mechanism. The stopper member is urged in the counterclockwise direction by a spring. When the knob protrudes in a state in which the card is not inserted in the connector, the stopper member, urged by the spring, exits a slot of the knob, rotates about a pin, and a rear end of the stopper member enters a card receiving slot. Accordingly, a card cannot be inserted into the card receiving slot 3 due to the protrusion of the stopper member into the card receiving slot.

Abstract: A disk array unit includes a motherboard enclosed within an enclosure. A group of first hard disk drives are mounted on the front surface of the motherboard. The individual first hard disk drives are kept in a standing attitude with respect to the front surface of the motherboard. One or more second hard disk drives are also mounted on the back surface of the motherboard. The disk array unit allows not only the front surface but also the back surface of the motherboard to receive the hard disk drives, so that the hard disk drives can efficiently be incorporated within the limited space, as compared with a conventional disk array unit. It is possible to realize an increased recording capacity of the entire disk array unit without enlarging the motherboard or adding another motherboard.

Abstract: A locking projection (6) which is formed into a channel-like shape is enabled to enter a channel-like recess (130) positioned in one side end portion which is outside a region where terminals (120) of a card (100) that is inserted in a normal posture are formed. A locking portion (65) of the locking projection (6) is formed as an inclined face, whereby the locking projection (6) is prevented from being raised, even when the card (100) is pressed against the locking projection. The locking portion (65) is positioned posterior in the card insertion direction to the positions where contacts (4) are placed.

Abstract: A connector has a housing (20) with a lock arm (28) that engages a lock (13) of a mating housing (10) when the housings (10, 20) are connected properly. Resilient members (50) are movable along a connecting direction (CD) of the housings (20, 10) and are displaceable along a direction (RDD) intersecting the connecting direction (CD). The resilient members (50) are pushed back by the mating housing (10) as the housings (20, 10) are connected. A spring (70) between the resilient member (50) and the housing (20) accumulates a biasing force to separate the housings (20, 10) as the resilient member (50) is moved back. An operable member (40) is movable along the connecting direction (CD) and has an operating portion (80) displaceable to an operable position where the lock arm (28) can be operated to cancel the locked state.

Abstract: A connector device includes a housing mounted on a mother board and having a slot for receiving a daughter board. A retainer is used for securing the daughter board to the housing, and includes a base having a channel for receiving the daughter board, and a seat having a bore for slidably receiving a latch. A spring may bias the latch to engage with the daughter board and to lock the daughter board to the base and the seat of the retainer. The latch includes an end portion having an angled surface for allowing the daughter board to move the latch against the spring.

Abstract: A connector device includes a housing mounted on a mother board and having a slot for receiving a daughter board. A retainer is used for securing the daughter board to the housing, and includes a base having a channel for receiving the daughter board, and a seat having a bore for slidably receiving a latch. A spring nay bias the latch to engage with the daughter board and to lock the daughter board to the base and the seat of the retainer. The latch includes an end portion having an angled surface for allowing the daughter board to nove the latch against the spring.

Abstract: A hold down apparatus is disclosed that has a saw-toothed device with a double end and a single end, the double end adapted to encompass a perpendicularly mounted card. The hold down apparatus has an anchoring hole in a supporting structure and a barbed hook coupled to the saw-toothed device and adapted to couple the saw-toothed device to the supporting structure through the anchoring hole, wherein the barbed hook deploys from the single end of the saw-toothed device. The hold down apparatus also has a crossbar adapted to couple to the double end of the device, wherein the crossbar binds the perpendicularly mounted card securely in place.

Abstract: A hold down apparatus is disclosed that has a saw-toothed device with a double end and a single end, the double end adapted to encompass a perpendicularly mounted card. The hold down apparatus has an anchoring hole in a supporting structure and a barbed hook coupled to the saw-toothed device and adapted to couple the saw-toothed device to the supporting structure through the anchoring hole, wherein the barbed hook deploys from the single end of the saw-toothed device. The hold down apparatus also has a crossbar adapted to couple to the double end of the device, wherein the crossbar binds the perpendicularly mounted card securely in place.

Abstract: A connector device includes a housing mounted on a mother board and having a slot for receiving a daughter board. A retainer is used for securing the daughter board to the housing, and includes a support having a channel for receiving the daughter board, and a latch slidably received in a base and to be maintained relative to the base at either a working position to engage with the daughter board, or a non-working position to disengage from the daughter board. The daughter board may be easily engaged into the housing when the latch is located at the non-working position.

Abstract: A connector having a first module (1) carrying a lever (2) provided with at least one maneuvering arm (3), and a second module (4) provided with at least one stud (5). The lever (2) is provided with at least one stud reception aperture. The aperture has a stud introduction segment (7) and a stud stopping segment (8). The stopping segment (8) constitutes together with the stud (5) of the second module, an axis of rotation of the lever.

Abstract: A device for inserting, extracting, and locking a module into, from, and in a rack. The device includes two arms which can pivot with respect to the module and which are articulated together by a common articulation, each of them including, on the one hand, at one end, an anchor for anchoring it into the rack and, on the other hand, a non-common articulation with the module. A device immobilizes one of the arms with respect to the other when the arms are anchored in the rack. Further, associated with at least one of the arms, an elastic device works in compression between the module and the arm when its end is anchored into the rack. Such a device may find particular application in electronics modules for avionics.

Abstract: An electrical connector is provided including matable first and second housings configured to receive electrical contacts. The electrical connector assembly includes a lever member having a cam arm engaging the first and second housing to connect the first and second housings to join corresponding electrical contacts. The first housing has a latch assembly engaging the lever member when the lever member is in a final engaged position. The first housing has a locking member that holds the cam arm in an insertion position. The first housing has a wire shield with feet and a tab that is retained in slots and a catch on the first housing. The electrical contacts have retention features that are retained in an encapsulate in a chamber abutting the second housing.

Abstract: The width of a signal line 3 is made narrower at a part connected with a connector pin 1 than a signal line width that can match the connector characteristic impedance. Furthermore, the width of the signal line 3 is made narrower at the part connected with the connector pin 1 than the projection width of the connector pin diameter. The disclosed connection structure of a planer waveguide signal line can, when a high frequency signal is transmitted from a rod-shaped coaxial structure to the signal line, prevent the transmissivity deterioration caused by radiation of the signal or reflection of the signal back to the outgoing side at the part of the signal line connected with a connector pin. The connection structure can also minimize transmission loss due to assembling error made during assembling into a semiconductor package.

Abstract: A lever type connector includes a first housing and a second housing. A lever is provided on the second housing so as to be pivotable between a first position and a second position. The lever includes a pair of lever bodies and a lever connecting portion connecting the pair of lever bodies. A lever retainer is provided on the second housing to retain the lever at the second position. A first boss is provided on at least one of the lever connecting portion and the lever retainer. The first housing and the second housing are fitted with each other in a leverage manner when the lever is pivoted toward the second position. At least one of the lever connecting portion and the lever retainer is flexed by the first boss in a state that the lever is retained on the lever retainer when the first housing and the second housing are completely engaged.

Abstract: A clamp assembly for an AGP display interface card includes a connector and a seat extending from one end of a socket in which an AGP display interface card is mounted. The connector is securely connected to the seat and includes a latch and a resilient look to clamp a hook on the AGP display interface card. The latch holds the hook in the connector, and the resilient loop presses against the hook to keep the hook pressed against the latch when the AGP display interface card is mounted in the socket. Therefore the AGP display interface card is stably mounted in the socket and is easily removed from the socket by releasing the connector.

Abstract: The holder is suitable for detachably fixing a component in an operational end position. The holder has an upper side on which the component is moved into the end position along a mounting direction. The holder comprises an ejector that has at least one spring which exerts an elastic force on the component in the final position. The spring force acts in a direction opposite the mounting direction.

Abstract: It is an object of the invention to provide an ejector mechanism and a socket which are free from fear of breakage and in which a smooth and reliable pulling out operation can be obtained. In the invention, an ejector mechanism includes an ejector having: an ejector which is interposed between the socket body and an attachment face of the relay, and in which a part of an arcuate face is in contact with an attachment face of the relay; and tilting enabling means, journalled on the socket body, for gradually displacing a contact position between the pushing-up curved face and the attachment face of the relay with using the journal portion as a tilting fulcrum, and, when the tilting enabling means performs a tilting operation, the contact position of the pushing-up curved face is moved in a pushing-up direction along which the relay is separated from the socket body, with using the journal portion as a tilting fulcrum.

Abstract: An optical transceiver module comprises a base (1), a pair of metallic releasable latches (4) attached to opposite lateral sides of the base, and a housing. The housing includes an upper housing (71) and a lower housing (72), which are mounted to an upper side and a lower side of the base respectively. Each latch includes a retention portion (41), and a spring portion (42) bent generally perpendicularly from an outer end of the retention portion. The retention portions of the latches are inserted into receiving grooves (17) defined in side walls (14, 15) of the base. The spring portions of the latches sit on the side steps (152) of the base. The upper housing electrically engages with rear parts of the spring portions. Any electrostatic charge that develops on the upper and lower housings is dissipated to external ground via the latches.

Abstract: An extractor rotatably couples to a connector and includes an extractor body, a first member, a second member, a biasing mechanism, and a cam arm. The first member and the second member both extend perpendicularly away from the extractor body to engage the connector. The cam arm attaches to the extractor body and extends perpendicularly away from the extractor body. A biasing mechanism is attached to the extractor which biases the cam arm. As the cam arm is rotated, the first and second members contact the connector and separate the connector assembly from the electrical device.

Abstract: A device to hold a peripheral component interconnect (PCI) card. The device may include a first member having a first side wall extending in a longitudinal direction, a second member having a tab mechanism and a living hinge coupled between the first member and the second member. The living hinge may allow the second member to move between a first (open) position and a second (closed) position. The living hinge may also allow the tab mechanism to abut against the PCI card when the second member is in the closed position.

Abstract: A low insertion force connector with a downsized and simple structure and high reliability is provided, wherein coupled connectors are capable of sufficiently moving in the uncoupling direction. The low insertion force connector includes: a first connector having a first cam-projection, a frame with a cam-opening to slidably accommodate the first connector in the coupling direction, a second connector with a coupling portion and a cam-engaging slit to be couples with the first connector in the frame, and a slider attached to the second connector, provided with a second cam-projection which engages both of the cam-opening and the cam-engaging slit, and provided with a cam groove consisting of a connector coupling cam groove and a shift-allowing cam groove continuing to the connector coupling cam groove. Thus, a low insertion force connector with a downsized and simple structure and high reliability can be realized.

Abstract: A card edge connector includes an insulative housing defining a central slot for receiving a circuit board. A block is formed on an end of the housing and defines a cavity in an outside surface thereof. A socket defined by two opposing arc sections is formed inside the cavity. A switching button includes a pivot and first and second side sections extending from the pivot and inclined with respect to each other. The button is arranged in the cavity with the pivot rotatably received and retained in the socket whereby the button is rotatable about the pivot between a first position where the first side section is moved into the cavity while the second side section is moved out of the cavity and a second position where the first side section is moved out of the cavity while the second side section is moved into the cavity. A latch pin extends from the first side section.

Abstract: The mechanism for inserting, extracting, sensing and locking a printed circuit board assembly (PCBA) in an electronic system provides both easier use and a longer service life for the PCBA as compared to a mechanism having two locking handles. Insertion, extraction, sensing and locking are simplified because a single handle can be used rather than two handles. The service life of the associated PCBA is extended because the forces applied to the PCBA are synchronous and applied more evenly than a PCBA having two handles, which reduces bending and other forces that can cause component failure.

Abstract: A card edge connector includes an insulative housing mounted on a mother board and defining a central slot for receiving a daughter board. Conductive contacts are retained in the housing for electrically engaging the daughter board. The contacts are soldered to the mother board for establishing electrical connection between the mother board and the daughter board. A relatively resilient retention arm extends from the housing and is deflectable from an initial position to a final position. The retention arm has an inner surface facing the circuit board and a latch projection extends from the inner surface for engaging a notch defined in the daughter board when the retention arm is in the initial position. The latch projection is disengaged from the notch of the daughter board when the retention arm is manually deflected to the final position. A relatively rigid stop arm extends from the housing and substantially opposes the resilient arm with a gap formed therebetween.

Abstract: A lever-type electrical connector has first and second matable connector parts and a lever. The lever is rotatably mounted on the first connector part and has an actuator bar at one end, and two spaced side members extending from the actuator bar alongside the side walls of the first connector part. The second connector part has a hood portion for housing the first connector part and the lever in the connected position. Support of the hood portion, in use engage end portions of the lever so that when the actuator bar is depressed from a starting position to a fully depressed position the lever pivots on the supports to lever the first connector part into the hood portion.

Abstract: An electrical connector includes insulative housing with a slot for receiving an auxiliary circuit card, a pair of pivotable ejectors for ejecting the circuit card, and pair of fasteners for mounting the connector to a primary circuit board. Each of the fasteners is anchored within the housing and includes a projecting mounting portion that is insertably mountable in a mounting aperture in the primary circuit board. Each of the ejectors is pivotably mounted on an ejector retaining portion of the fastener. In an embodiment, the ejector retaining portion of the fastener is formed by two resilient beams arranged parallel to each other. The ejector fits between the beams. At a free end of each beam, a protrusion is formed which is held in a biased manner inwardly against a cooperative detent in a side of the ejector. The ejector is held pivotably by the opposed protrusions riding within the detents. The arrangement facilitates a slim design of the connector, occupying less space.

Abstract: A connector contact fingers of a testing rig which overcomes the co-planarity, contact and alignment difficulties in the testing procedure of integrated circuit packages. The connector comprises a tongue extension to the ends of the fingers to increase the surface area from which contact can be made with the device lead, a lever extension to the retainer along one side of the fingers to prevent deflection of the fingers, and a shoulder structure in the connector which acts as an adaptor to secure a flexible printed circuit board to the legs.

Abstract: A female connector is provided with a first moving member and a second moving member which are capable of moving independently of each other, and the female connector is further provided with an operating member which is rotatable. The operating member is provided with a pair of first cam grooves whose spiral groove shapes are formed oppositely, while the first and second moving members are provided with first cam pins which are respectively inserted in the pair of first cam grooves. As the operating member is rotated, the first and second moving members are moved in mutually opposite directions. The first and second moving members are each provided with a pair of second cam grooves whose angles of inclination are opposite, while a male connector is provided with second cam pins which are inserted in the second cam grooves.

Abstract: An electric fan assembly for vehicle air conditioning systems is described including an electric motor carrying an impeller and a casing having a section for conveying a stream of air and a seat for housing the electric motor. The assembly includes an electric connector having a first section fixed to the electric motor and co-operating with a connector-carrying seat formed integrally in the housing seat provided on the casing for receiving a second connector section.

Abstract: A power distribution center (PDC), such as those used in automotive vehicle electrical systems, has device for pivotally connecting a power supply terminal with the PDC such that pivoting movement of the terminal relative to a PDC housing inserts the terminal through an aperture formed in the housing and into contact with a bus bar retained within the housing. The pivoting connection between the terminal and the PDC allows the terminal to be securely connected with the bus bar without the need for any tools, and provides a degree of alignment to guide the terminal into the aperture. It also provides leverage so that a worker can easily generate sufficient force to insert the terminal into connection with the bus bar in the presence of a force resisting insertion, such as may be generated by a spring clamp or other device for urging the terminal into contact with the bus bar.

Abstract: The invention relates to an insertion/extraction tool for inserting and extracting printed circuit boards from a card cage. The invention uses fewer parts than the prior art and reduces bending stress on the printed circuit board by simultaneously applying the insertion or extraction force to both sides of the plane of the printed circuit board.

Abstract: Disclosed is an inexpensive structure for mounting a flexible printed circuit board to a hard circuit board without using a connector. The terminal section of the flexible printed circuit board is mounted to a holding member, which is secured to the hard circuit board to electrically connect the wiring pattern of the terminal section to the electric circuit of the hard circuit board, whereby it is possible to mount the flexible printed circuit board to the hard circuit board without using an expensive connector, thereby achieving an improvement in terms of cost and operability.

Abstract: A connector connecting structure, includes a first connector supported by a holder and a second connector to be connected to the first connector. In the connector connecting structure, there is provided in the holder a support portion including a recessed groove or the like for supporting the first connector in such a manner that the first connector can be slid in a direction where the two connectors can be connected together, while two slide members slidable and displaceable in a direction at right angles to the connecting direction of the two connectors are respectively supported between the holder and first connector.

Abstract: A robust optoelectronic transceiver module which is quick, easy, and inexpensive to manufacture. The transceiver module has a main housing which consists of a potting box with potting material inserted therein. In addition, a circuit board is encased by the potting material. The circuit board has an optical subassembly mounted thereon. The optical subassembly extends outside of the potting box through a recess. Correspondingly, a recess cover is provided for forming a liquid fight seal between the recess cover, the potting box, and the optical subassembly.