Methods and systems may include an input/output (IO) interface that has an integrated buffer, a housing and a substrate disposed within the housing. The substrate may include a first side, a second side and a connection edge. The integrated buffer can be coupled to at least one of the first side and the second side of the substrate. A plurality of rows of contacts may be coupled to the first side of the substrate. Each row of contacts can be stacked substantially parallel to the connection edge. The substrate may have power outputs coupled thereto and the integrated buffer can include a voltage regulator that has a supply output coupled to the power outputs.

A cover detachment prevention structure includes an outer housing provided with an opening, and a cover fitted into the outer housing by moving in a predetermined direction with respect to the outer housing and installed in the outer housing to close the opening. The cover is configured such that a force received from another object when the cover abuts on the another object is at least any one of a force directed toward the predetermined direction and a force directed toward a direction orthogonal to the predetermined direction.

A substrate protection structure during inner housing assembling includes an outer housing, a substrate, an inner housing that is disposed with the substrate and is disposed in the outer housing by moving in a predetermined direction relative to the outer housing together with the substrate, and a first projecting portion that is disposed to the inner housing, and projects further on a rear side than the substrate in the predetermined direction when the inner housing is disposed in the outer housing.

Disclosed is a board connector including a board connector body, conductive terminals of upper and lower rows inserted inside the board connector body and a docking housing wrapped outside the board connector body, wherein a front end of the board connector is used for docking with a cable connector, the docking housing including a top wall, a bottom wall and two side walls, a docking slot is provided between the top wall and a top surface of the board connector body, and the bottom wall is provided with a blocking element that protrudes downward. As compared with the prior art, interference may occur between a front end of a blocking element and a front end of a cable connector when the cable connector is reversely inserted, thereby preventing occurrence of a reverse inserting phenomenon.

A connector for use in coupling a load device to electrical conductors of a direct current bus bar. The connector has a housing and the housing carrying a printed circuit board that is electrically coupled to the bus bar and the load device. The printed circuit board functions to control the providing of direct current power from the bus bar to the load device, provide a dimming signal to the load device, and/or selectively provide direct current from a source of emergency power to the load device.

Provided is an electrical connection cassette with which it is possible to freely expand a device and add functions in accordance with the size of free space. An electrical connection cassette is provided with: a circuit board; and first connection terminals and second connection terminals mounted on the circuit board and having terminal shapes that can be engaged with each other. In a state with a terminal connection direction oriented in a predetermined direction with respect to the circuit board, the first connection terminals are disposed on the side of one main surface of the circuit board, and in a state with a terminal connection direction oriented in a direction parallel to the predetermined direction, the second connection terminals are disposed near the other main surface of the circuit board.

A connector configured to operate in two different electrical performance modes. The connector may include a plurality of connector contacts, a plurality of contact pads, and an insulator having an insulating portion adjacent the plurality of contact pads. The insulator is movable between an insulating position and a non-insulating position. When the insulator is in the insulating position, the insulating portion insulates the plurality of contact pads from the plurality of connector contacts and the connector operates in a first one of the electrical performance modes. When the insulator is in the non-insulating position, the plurality of connector contacts contact the plurality of contact pads and the connector operates in a different second one of the electrical performance modes. The connector may be implemented as a plug or an outlet.

Embodiments of the present invention generally relate to communication connectors, and methods of manufacture thereof and their components. In some embodiments, the methods focus on reducing the net effect on electrical performance of communication connectors from variation in manufacturing, where the connectors include multiple stages of capacitive coupling.

A rail vehicle control relay board includes a main frame, a mother board and a daughter board assembly which are arranged in the main frame, the main frame includes a board face mounting frame and a daughter board mounting frame which protrudes from the board face mounting frame, the mother board is arranged in the board face mounting frame, and multiple daughter board assemblies perpendicular to the mother board are arranged side by side in the daughter board mounting frame, the daughter board assemblies are electrically connected to the mother board, and multiple first connectors configured to perform output outwards are arranged on the mother board. The rail vehicle control relay board has a high strength, and may reduce the daughter board loosening faults, extend a wiring space and increase the number of relays arranged.

A downloader gender case is disclosed. The download gender case according to the present invention comprises: a fixed cover for fixing a substrate, configured to surround a part of the substrate and the periphery of a header and formed with a first through hole through which the header is opened; a slide cover disposed on the outer side of the fixed cover, configured to surround the other part of the substrate and the periphery of a pin header and formed with a second through hole through which the pin header is opened; and an opening and closing portion coupled with the slide cover to open and close the second through hole, the slide cover being capable of sliding in a direction toward the header or the pin header.