The invention relates to a modular assembly that comprises at least two housing parts (1), in which in each case a circuit board (L) is received, at least one internal connecting means (17), one cover element and one closing element. Each housing part (1) is formed from a base plate (3), a rear wall (5) and side walls (4) that are connected to said rear wall. The housing parts (1) are stacked in such a manner that the side walls (4) combine to form a first (6) and a second complete side wall (7), and that the rear walls (5) combine to form a complete rear wall (8). At least two of the housing parts (1) are stacked in such a manner that the base plate (3) of the one housing part (1) is connected to the side walls (4) of the other housing part (1). The at least one internal connecting means (17) extends in a direction perpendicular to the base plates (3) and connects multiple circuit boards (L) by way of first connectors (18). The cover element lies on the side walls (4) of precisely one housing part (1). The closing element is attached to a front side on the housing parts (1), said front side lying opposite the complete rear wall (8).

A substrate unit includes a first connector including a first terminal and a first housing accommodating the first terminal, and to be connected to an external connector, a first substrate on which the first connector is mounted, a second connector including a second terminal and a second housing accommodating the second terminal, and to be connected to the external connector, a second substrate on which the second connector is mounted and a case accommodating the first substrate and the second substrate. The first housing is provided with a first locking portion. The second housing is provided with a second locking portion. The first locking portion and the second locking portion are locked to each other. The first terminal and the second terminal are disposed to face an opening provided in the case through which the external connector is to be connected to the first connector and the second connector.

The invention provides a motherboard assembly. The motherboard assembly includes a circuit board, an expansion card connector, an expansion card assembly, a bracket and a fastener. The expansion card connector is disposed on the circuit board. The expansion card assembly includes a cage, an adapter card, and at least one expansion card. The adapter card is installed on the cage and includes an electrical connector. The electrical connector is inserted into the expansion card connector, and the expansion card is installed on the adapter card. The bracket includes a first mount plate and a second mount plate connected to each other. The first mount plate is fixed on the circuit board, and the second mount plate is located farther away from the circuit board than the first mount plate. The fastener is disposed through the cage and screwed into the second mount plate of the bracket.

A structure is provided for a structure for providing electrical connections across a connection interface is provided. The structure may include one or more signal connections, a plurality of reference connections, and one or more high-pass filters. One or more of the reference connections is configured to connect a first reference voltage in a first region on a first side of the interface with a second reference voltage in a second region on a second side of the interface. One or more of the reference connections in a first class of reference connections is coupled one or more of the reference voltages through the one or more high-pass filters, and low-bandwidth information is communicated across the one or more reference connections in the first class of reference connection.

A structure is provided for a structure for providing electrical connections across a connection interface is provided. The structure may include one or more signal connections, a plurality of reference connections, and one or more high-pass filters. One or more of the reference connections is configured to connect a first reference voltage in a first region on a first side of the interface with a second reference voltage in a second region on a second side of the interface. One or more of the reference connections in a first class of reference connections is coupled one or more of the reference voltages through the one or more high-pass filters, and low-bandwidth information is communicated across the one or more reference connections in the first class of reference connection.

Exemplary embodiments provide an interconnectable micro data center module comprising walls that define an internal area adapted to receive server hardware apparatus, a first surface adapted for interconnection with a first module, interconnectable transmission means to facilitate power and data flow between the micro data center module and the first module, and a sensor device capable of determining when the micro data center module is interconnected with the first module.

A carrier assembly configured to facilitate manufacture of a printed circuit board assembly includes a bottom frame defining a generally rectangular configuration and having a length and a width. The bottom frame is adjustable to vary at least one of the length or the width thereof. The assembly further includes a core releasably positionable on the bottom frame and configured to support a circuit board thereon. A carrier assembly system includes the bottom frame and a plurality of cores.

A board connector used in a printed circuit board assembly and includes a shell, a pin and an elastic member. The shell has a chamber therein and a hole on a surface thereof. The pin is configured to accommodate in the chamber, wherein at least one part of the pin protrudes out of the shell via the hole. The elastic member is configured to locate in the chamber. The pin is located between the surface of the shell and the elastic member.

A control device includes a casing and a control circuit substrate arranged inside the casing. The control circuit substrate includes: a control circuit mounted on the control circuit substrate; an internal connector connectable to a communication cable inside the casing, the communication cable being connected to an expansion circuit substrate; and an external connector connectable to another communication cable outside the casing, the another communication cable being connected to another expansion circuit substrate. The control circuit is connected to the internal connector and the external connector in parallel.

The invention provides a motherboard assembly. The motherboard assembly includes a circuit board, an expansion card connector, an expansion card assembly, a bracket and a fastener. The expansion card connector is disposed on the circuit board. The expansion card assembly includes a cage, an adapter card, and at least one expansion card. The adapter card is installed on the cage and includes an electrical connector. The electrical connector is inserted into the expansion card connector, and the expansion card is installed on the adapter card. The bracket includes a first mount plate and a second mount plate connected to each other. The first mount plate is fixed on the circuit board, and the second mount plate is located farther away from the circuit board than the first mount plate. The fastener is disposed through the cage and screwed into the second mount plate of the bracket.