Abstract: A connection assembly for an electronic device includes a hollow sheath and a fastener. In this case, the hollow sheath has a head portion, an axle portion, and a fastening portion. The axle portion connects the head portion and the fastening portion, and the fastening portion has a through hole. The fastener is inserted into the hollow sheath and engaged tightly in the fastening portion. One end of the fastener against the inner bottom surface of the fastening portion.

Abstract: A tray (1) having blocking portion for an optical disc driver can be received in a housing (2). The tray includes a main body (11) and a blocking portion (12). The main body includes a rear end (114) received in the optical disc driver and a front end (113). The front end can move out of the optical disc driver. A recess (115) is defined in the main body, for accommodating an optical disc therein. The blocking portion has a protrusion (123), a free end (121), and a connecting end (122). The tray is prevented from sliding completely out of the optical disc driver by the blocking portion. When the tray is manually pulled, the blocking portion is bent inwardly, and the tray is completely detachable from the optical disc driver. The blocking portion helps prevent the tray from being damaged or broken.

Abstract: A card edge connector assembly mounted on a mother board comprises a dielectric bracket and first and second card edge connectors. The bracket has a center wall, a pair of side walls, and a pair of top plates. Two receiving spaces are defined between the side walls on opposite sides of the center wall for retaining the first and second card edge connectors.

Abstract: A card edge connector for connecting a daughter board to a mother board comprises an insulative housing, a number of contacts received in the housing, first rail guide disposed in the housing and extending beyond a top surface thereof, and second rail guide formed on opposite ends of the housing. The first rail guide includes at least one pair of retention posts. The two retention posts of the at least one pair are symmetrically disposed in the housing. The second rail guide includes two opposite retention members 42. Both the first and second rail guides are removable from the housing and adjustable in size and material to accommodate different daughter boards. A daughter board inserted into the housing is properly retained by the first and second rail guide in lateral and distal directions thereby preventing deformation of a middle portion of the daughter board.

Abstract: An electrical connector comprises an insulative housing defining a slot and a number of cavities, a number of conductive contacts and two pairs of switch terminals received in the corresponding cavities of the housing, a pair of metal sheets received in the housing and an insert. Each contact forms an engaging portion extending into the slot. Each switch terminal forms a connecting portion adapted for electrically connecting with the corresponding metal sheet. The insert is configured to disengage the connecting portions of one pair of the switch terminals from the corresponding metal sheet. The other pair of the switch terminals remains interconnected via the other metal sheet.

Abstract: A card edge connector assembly comprises an elongate housing mounted on a mother board, and a switch key for engaging with the housing and activating inner circuitry formed in the mother board. The housing comprises an elongate slot formed between opposite side walls thereof for receiving a daughter board, a plurality of receiving passageways defined in each side wall for retaining contacts therein, a pair of cutouts transversely defined in a mating face of the housing, and a projection transversely formed between the side walls. The daughter board defines a pair of notches corresponding to one of the cutouts and the projection of the card edge connector. The switch key can transmit information to the mother board by electrical contact between a conductive membrane disposed on the switch key and the corresponding contacts received in the passageways below the corresponding cutout of the housing.

Abstract: An electrical connector adapted to be mounted to a mother board, includes a casing defining a slot therein for receiving a daughter board and a plurality of pin pairs arranged in the slot for electrically engaging with the daughter board. The casing has a fixed member fixed in the slot and a switch key selectively fit into the slot at two locations corresponding to a 3.3V PCI connector and a 5V PCI connector. Thus, the connector may be selectively configured to be either a 3.3V PCI connector or a 5V PCI connector by setting the position of the switch key. The insertion of the switch key into the slot changes the spatial relationship between a pair of pins thereby transmitting a signal to the mother board for selecting the electrical voltage supplied to the connector corresponding to the configuration of the connector.

Abstract: A card edge connector comprises an insulative housing, a number of first contacts and a corresponding number of second contacts. The housing defines a card receiving slot and a number of contact receiving cavities. The first and second contacts have spring portions including individual contacting portions that are located at different levels from a top face of the housing and are spaced a height which is greater than a vertical length of a tapered front edge of a daughter card mated with the connector. The spring portion of the second contact forms an S-shaped portion having a lower turning point spaced from a retention portion of the second contact a distance less than the vertical length of a free end of the second contact above a bottom face of the prestress portion that the free end of the second contact bears against.

Abstract: An electrical connector assembly comprises a standoff bracket defining a first receiving cell. The standoff bracket defines a mounting face for mounting onto a motherboard. A first connector is received within said first receiving cell. The first connector includes a plurality of contacts and defines a receiving slot for receiving an expansion card therein.

Abstract: An electrical connection device includes a socket connector and at least one plug connector. The socket connector is mounted to a substrate and defines two or more receptacle chambers each selectively mating with a plug connector. Each receptacle chamber has a tongue plate with a plurality of terminals fixed thereon. A resilient arm having a projection at a free end thereof is formed in the receptacle chamber for engaging with a raised section of the corresponding plug connector thereby retaining the plug connector in the receptacle chamber. The plug connector defines a slot for receiving the tongue plate. A plurality of contacts is arranged in the slot for electrically engaging with the terminals fixed to the tongue plate of the corresponding receptacle chamber.

Abstract: A card edge connector for receiving and retaining a card edge of a complementary card includes an upper housing and a lower housing each of which defines a central slot therein and the two central slots are in alignment with each other for receiving the card edge of the complementary card. A plurality of contacts each of which includes an upper portion and a lower portion are received in the upper and lower housings so that the upper portion of each contact is slidably received in the upper housing and the lower portion of each contact is fixed in the lower housing.

Abstract: A card edge connector is disclosed, which comprises an elongate insulating housing including a central slot extending along a longitudinal direction thereof for receiving a daughter board, a plurality of conductive contacts provided on longitudinal sides of the central slot for mating with contact fingers formed on the daughter board, and at least one removable positioning key fixed in the insulating housing for matching a cutout formed between two adjacent contact fingers of the daughter board.