Modular shelving systems, magnetic electrical connectors, conductor assemblies, and mounting inserts are disclosed. A modular shelving system includes at least one shelving module, a power module coupled to the at least one shelving module, and a conductor assembly coupled to the at least one shelving module and electrically connected to the power module. The conductor assembly includes a board including a first column of apertures and a second column of apertures, a back plate formed from a ferromagnetic material or from a magnetic material, a first conductor electrically coupled to the power module and positioned between the back plate and the board, and a second conductor electrically coupled to the power module and positioned between the back plate and the board. The first conductor is aligned with the first column of apertures of the board. The second conductor is aligned with the second column of apertures of the board.

An apparatus and method are provided for use with a first card of a first size [e.g. subscriber identify module (SIM) card, etc.] and a second card of a second size (e.g. memory card, etc.). Included is a connector with a first portion and a second portion which is configured for being manipulated to have a first orientation and a second orientation. The first orientation is such that the first portion of the connector is positioned for removably receiving the first card, or the second portion of the connector is positioned for removably receiving the second card. Further, the second orientation is such that the first card is stacked with the second card for being removably inserted in a device. This permits electrical communication between the device and the first card when the first card is removably received in the first portion of the connector, and further permits electrical communication between the device and the second card when the second card is removably received in the second portion of the connector.

An apparatus and method are provided for use with a first card of a first size [e.g. subscriber identify module (SIM) card, etc.] and a second card of a second size (e.g. memory card, etc.). Included is a connector with a first portion and a second portion which is configured for being manipulated to have a first orientation and a second orientation. The first orientation is such that the first portion of the connector is positioned for removably receiving the first card, or the second portion of the connector is positioned for removably receiving the second card. Further, the second orientation is such that the first card is stacked with the second card for being removably inserted in a device. This permits electrical communication between the device and the first card when the first card is removably received in the first portion of the connector, and further permits electrical communication between the device and the second card when the second card is removably received in the second portion of the connector.

In a substrate-side housing of a plug connector and a housing of a socket connector, an abutment receiving portion and a columnar projection are provided to disable the socket connector from being inserted into the substrate-side housing when the socket connector is misaligned beyond a movable range of a fitting-side housing of the plug connector.

In a substrate-side housing of a plug connector and a housing of a socket connector, an abutment receiving portion and a columnar projection are provided to disable the socket connector from being inserted into the substrate-side housing when the socket connector is misaligned beyond a movable range of a fitting-side housing of the plug connector.

A plug connector includes an insulative housing with mating slot, contacts disposed in the housing by two sides of the mating slot, and a pair of side arms located by two opposite ends of the mating slot in a horizontal transverse direction. a receptacle connector includes an insulative housing defining a horizontal mating tongue; contacts disposed in the housing with contacting sections exposed upon two opposite surfaces of the mating tongue; and a monolithic horizontal metallic shielding plate disposed and extending substantially fully the mating tongue. The shielding plate defines side protruding edge sections exposed outside of corresponding side edges of the mating tongue and a notch structure on each side protruding edge section, the pair of side arms each defines a hook structure to engagement with the notch structure.

A first connector and a second connector of this connector assembly can mutually connect along the vertical direction. The first connector comprises a first housing provided with a sliding surface, a locking surface, and a receiving surface. The locking surface intersects, at an angle of 90° or less, with a line segment extending straight upward from the locking surface. The second connector comprises a second housing provided with a spring section and a locked section. The locked section can move forward and backward as the spring section elastically deforms. The locked section has a locked surface. When the second connector is in a separated state of being separated from the first connector, the locked surface intersects, at an angle of 90° or less, with a line segment extending straight upward from the locked surface. In a fitting step, the locked section moves downward while being pressed against the sliding surface. The locked section abuts the receiving surface upon moving downward on the sliding surface.

A first connector and a second connector of this connector assembly can mutually connect along the vertical direction. The first connector comprises a first housing provided with a sliding surface, a locking surface, and a receiving surface. The locking surface intersects, at an angle of 90° or less, with a line segment extending straight upward from the locking surface. The second connector comprises a second housing provided with a spring section and a locked section. The locked section can move forward and backward as the spring section elastically deforms. The locked section has a locked surface. When the second connector is in a separated state of being separated from the first connector, the locked surface intersects, at an angle of 90° or less, with a line segment extending straight upward from the locked surface. In a fitting step, the locked section moves downward while being pressed against the sliding surface. The locked section abuts the receiving surface upon moving downward on the sliding surface.

In a connector, first, second, third and fourth terminals are disposed to satisfy conditions (A) and (B): (A) (a1) a left-end of the first terminal is positioned to left of a left-end of the fourth terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in a left-right direction is shorter than a first distance, or (a2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, (B) (b1) a right-end of the second terminal is positioned to left of a right-end of the third terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than a second distance, or (b2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction.

In a connector, first, second, third and fourth terminals are disposed to satisfy conditions (A) and (B): (A) (a1) a left-end of the first terminal is positioned to left of a left-end of the fourth terminal, and a distance between the left-end of the first terminal and the left-end of the fourth terminal in a left-right direction is shorter than a first distance, or (a2) the left-end of the first terminal coincides with the left-end of the fourth terminal in the left-right direction, (B) (b1) a right-end of the second terminal is positioned to left of a right-end of the third terminal, and a distance between the right-end of the second terminal and the right-end of the third terminal in the left-right direction is shorter than a second distance, or (b2) the right-end of the second terminal coincides with the right-end of the third terminal in the left-right direction.