In a magnetic shield material including a magnetic layer containing a magnetic material and an electrically conductive layer containing an electrically conductive material, the electrically conductive layer is designed to have a thickness corresponding to a frequency band of electromagnetic wave to be shielded. More specifically, the thickness of the electrically conductive layer (thickness of the aluminum foil in the drawing) is designed to have a thickness to maximize magnetic field shield effect of the magnetic shield material (thickness of the aluminum foil corresponding to peak value frequency in curve E in the drawing) in a frequency band of electromagnetic wave to be shielded. This makes it possible to obtain good magnetic field shield effect of the magnetic shield material in the frequency band of electromagnetic wave to be shielded.

A housing assembly for electronic devices has a base housing and a first secondary housing. The base housing has a first upper wall, a first lower wall, a first wall, a second wall, and a first device receiving space. The first secondary housing is detachably mounted to an outer side of the second wall, and has a second upper wall, a second lower wall, a connecting wall, and a second device receiving space defined by the second wall together with the second upper wall, the second lower wall and the connecting wall of the first secondary housing.

An electrical connector includes: an insulative housing having a base portion and a tongue portion extending forwardly from the base portion; a number of terminals retained in the insulative housing; a shielding shell attached to the insulative housing to form a receiving space; a metal shell for mounting on a printed circuit board, the metal shell being affixed to the shielding shell; and an insulative shell insert-molded with the metal shell and enclosing the shielding shell.

A gasket for use with an electromagnetic interference (EMI) shielding cage for a connector includes a conductive body having an opening configured to receive a first end of the EMI shielding cage near a gasket mating wall incorporated on the EMI shielding cage. The conductive body has a first face designed to face away from the gasket mating wall, a second face designed to face the gasket mating wall, an inner perimeter and an outer perimeter. A plurality of engagement tabs are disposed along the outer perimeter and extend away from the first face. A plurality of spring tabs are disposed along the inner perimeter and extend away from the second face. When the first end of the EMI shielding cage is inserted into the opening of the conductive body and an opening of an optional complementary faceplate with the engagement tabs facing the faceplate and the spring tabs facing the gasket mating wall of the EMI shielding cage, the engagement tabs and the spring tabs cooperatively maintain a predefined separation distance D1 between the gasket mating wall and the optional complementary faceplate.

A shielding cage with an improved construction is disclosed that permits such cages to be more closely spaced together when a plurality of them are arranged in side-by-side arrays of cages. The cage is formed from a sheet metal blank that is stamped and formed to define sidewalls, top wall, bottom wall and a rear wall. In one embodiment, the ends of the blank are formed with interengaging elements in the form of tabs and slots that interfit within the plane of one of the cage walls, thereby eliminating the need for projections disposed on the sidewalls of the cage.

An image forming apparatus includes an image forming unit configured to form an image on a recording material; a fixing unit configured to heat the image in order to fix the image to the recording material; a control board; a support member, wherein the control board is attached to the support member; and a mounting portion, wherein the support member is attached to the mounting portion. The support member includes a side wall. A height of the side wall is smaller than twice a distance between the side wall and the connector on the control board under a state in which the control board is attached to the support member, and is larger than a height from a bottom surface of the support member to an upper surface of the control board.

A connector assembly includes cages arranged as an upper cage and a lower cage in an up-down direction, a receptacle connector, a first liquid cooling tray and a second liquid cooling tray. Each cage includes a frame and a plurality of partitioning walls provided to the frame, and the frame and the plurality of partitioning walls together define a plurality of insertion space arranged transversely. The first liquid cooling tray is provided to a top portion of the upper cage and constitutes an upper wall surface of each of the plurality of insertion space of the upper cage. The second liquid cooling tray is provided between the upper cage and the lower cage, constitutes a lower wall surface of each of the plurality of insertion spaces of the upper cage, and constitutes an upper wall surface of each of the plurality of insertion space of the lower cage. A pressuring spring corresponding to each insertion space of the upper cage is provided on the upper surface of the second liquid cooling tray, and a pressuring spring corresponding to each insertion space of the lower cage is provided on the bottom plate.

A length of a protection wall, which is greater than a length of projection of a connecting end portion of a plug connector from opening end portions of an upper case as well as a lower case of an optical module, is set to be smaller than an interval between a contact surface of each of lower stopper pieces of a receptacle cage to come into contact with an end surface of a side wall as well as an end surface of an end surface of the lower case and an opening end surface of a slot of a host connector.

An optical transceiver according to an aspect of the present embodiment is an optical transceiver configured to be inserted to and extracted from a cage of an apparatus along a first direction. The optical transceiver includes a device generating heat, and a housing having a rectangular parallelepiped shape with long sides extending along the first direction. The housing includes an internal space housing the device, and an outside part configured to be exposed to an outside of the cage. When the housing is engaged with the cage, the outside part having an air intake part configured to bring an outside air into the internal space for cooling the device.

The invention provides a shield shell that allows easy insertion of a circuit board or other insulator into the shield shell. A shield shell 300 includes a shell body 310 and first and second position restrictors 320a and 320b. The first position restrictor 320a is provided at an edge portion 315 of an insertion port 310 of the shell body 310 and is located inside the insertion port 315. The second position restrictor 320b is provided in the shell body 310 so as to oppose the first position restrictor 320b with a spacing in a Z-Z′ direction. A distance in the Z-Z′ direction from the first position restrictor 320a to the second position restrictor 320b is substantially equal to, or slightly larger than, a distance in the Z-Z′ direction from a first face 101 to a second face 102 of a circuit board 100. When the circuit board 100 is inserted into the shell body 310 through the insertion port 315, the first position restrictor 320a and the second position restrictor 320b are abuttable on the first face 101 and the second face 102, respectively, of the circuit board 100.