A multi-level, multi-connector assembly that may include high-speed, low-speed and power terminals is protected from electromagnetic interference. The multi-level, multi-port connector assembly includes a bottom port connector connected with a circuit board, a top port connector positioned over the bottom port connector, and an electromagnetic shielding cage positioned over both the top port connector and the bottom port connector to provide shielding from a range of electromagnetic interference (EMI) for the top port connector and the bottom port connector. Each of the top and bottom port connectors comprise power and communication signal conductors, where the signal conductors are operable to conduct at least high-speed communication signals.

A multi-level, multi-connector assembly that may include high-speed, low-speed and power terminals is protected from electromagnetic interference. The multi-level, multi-port connector assembly includes a bottom port connector connected with a circuit board, a top port connector positioned over the bottom port connector, and an electromagnetic shielding cage positioned over both the top port connector and the bottom port connector to provide shielding from a range of electromagnetic interference (EMI) for the top port connector and the bottom port connector. Each of the top and bottom port connectors comprise power and communication signal conductors, where the signal conductors are operable to conduct at least high-speed communication signals.

A board connector including plural terminal units each including an inner terminal, an outer terminal covering the inner terminal, and a terminal unit-side dielectric body provided between the inner terminal and the outer terminal and supporting the inner terminal. The plural terminal units are arranged in a row along one direction in a state in which adjacent of the plural terminal units contact each other.

A board connector including an inner terminal including a connection portion for connecting to an inner conductor, an outer terminal, and a terminal unit-side dielectric body. The outer terminal includes a terminal-side covering portion covering the inner terminal in a state in which the connection portion protrudes outward, and a terminal-side extension portion extending from the terminal-side covering portion and extending alongside the connection portion. The terminal unit-side dielectric body is provided between the inner terminal and the outer terminal at an inside of the terminal-side covering portion so as to support the inner terminal.

A communication system having a circuit board with an airflow opening includes a receptacle cage configured to be mounted to the circuit board adjacent a communication connector. The receptacle cage has walls including a front wall, a rear wall and side walls defining a cavity. A module channel is defined in the cavity configured to receive a pluggable module. The module channel has a module port at the front wall that receives the pluggable module. An airflow channel is defined by at least one of the walls of the receptacle cage located between the module channel and the circuit board. The airflow channel is configured to be in flow communication with the airflow opening in the circuit board for cooling the pluggable module in the module channel. The airflow channel has an airflow port at the front wall.

A connector for use with high speed signals. The connector may include lead frame assemblies in a connector housing. A lead frame assembly may include signal conductive elements and ground conductive elements disposed in a repeating pattern, and one or more corrugated sheets attached to the ground conductive elements. The corrugated sheets may extend more than half of the length of the signal conductive elements. Valleys of the corrugated sheets may be welded to the ground conductive elements with line welds. The line welds may extend over a large percentage of the length of the conductive elements. Such a configuration enables accurately and repeatedly establishing signal to ground spacing and therefore promotes high signal integrity, even for miniaturized connectors. Such a connector may be used to meet signal integrity requirements in connectors designed for 112 GBps and beyond.

An electrical connector assembly includes an electrical connector and a metal shielding shell. The electrical connector includes an insulating body and a number of conductive terminals. The insulating body includes a slot. Each conductive terminal includes an elastic abutting portion for abutting against the circuit board. The metal shielding shell includes a receiving cavity for receiving a mating connector. When the mating connector is inserted into the receiving cavity and has not yet made contact with the conductive terminals of the electrical connector, a better shielding effect can be achieved. Besides, by electrically connecting the conductive terminals and the circuit board in a mutually abutting manner, the requirement on the complexity of the circuit board manufacturing process is reduced.

A mating module includes a conductive terminal, a cable, a first metal shield member and a second metal shield member. The cable includes a core electrically connected to the conductive terminal, an insulating layer wrapped on the core, and a shielding layer wrapped on the insulating layer. The first metal shield member includes a first mounting piece. The second metal shield member includes a second mounting piece. The cable further includes a protruding piece connected to the shielding layer. The protruding piece is directly or indirectly clamped by the first mounting piece and the second mounting piece. As a result, the shielding effect of the mating module is improved. The present disclosure also relates to a cable connector having the mating module.

A connector cage assembly includes a housing defining an upper port and a lower port stacked over each other in an up-down direction, an intermediate member between the upper port and the lower port in the up-down direction, and a movable stopper movably disposed on the intermediate member and movable between a first position and a second position in a front-rear direction perpendicular to the up-down direction. The movable stopper is at least partially located inside the intermediate member in the first position. The movable stopper at least partially extends beyond the intermediate member and limits a plug connector inserted into the lower port in the second position.

A connector cage assembly includes a housing defining an upper port and a lower port stacked over each other in an up-down direction, an intermediate member between the upper port and the lower port in the up-down direction, and a movable stopper movably disposed on the intermediate member and movable between a first position and a second position in a front-rear direction perpendicular to the up-down direction. The movable stopper is at least partially located inside the intermediate member in the first position. The movable stopper at least partially extends beyond the intermediate member and limits a plug connector inserted into the lower port in the second position.