An electric connector includes an insulative body, multiple conductive terminals, a shielding sheet, and a shielding shell. The insulative body includes a base and a tongue. The conductive terminals include an upper row of terminals and a lower row of terminals, which are disposed on an upper side and a lower side of the tongue, respectively. The shielding sheet is embedded in the insulative body and located between the upper row of terminals and the lower row of terminals. Two sides of the shielding sheet are extended with an extending section respectively. A distal end of each extending section is folded back to form an engaging portion. The shielding shell is adapted to sheathes the insulative body. Two sides of the shielding shell are respectively provided with an engaging trough engaged with one of the engaging portions to make the shielding shell contact with the shielding sheet.

A connector assembly comprises a connector and a mating connector mateable with each other. The connector comprises a first terminal, a second terminal and a shield portion. The shield portion is located between the first terminal and the second terminal in the pitch direction. The mating connector comprises a first mating terminal, a second mating terminal and a mating shield portion. The mating shield portion is located between the first mating terminal and the second mating terminal in the pitch direction. One of the shield portion and the mating shield portion has a plate portion, and a remaining one of the shield portion and the mating shield portion has a mating plate portion. Under the mated state, a position of the plate portion in the pitch direction is equal to or overlaps with another position of the mating plate portion in the pitch direction.

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 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 system includes an adapter with a first mating portion, a second mating portion and a transition portion. A continuous outer wall extends across the first mating portion, the transition portion and the second mating potion. A first terminal positioned in the adapter. At least one receptacle has a receptacle mating section and a receptacle transition section. A continuous receptacle outer conductive wall extends across the receptacle mating section and the receptacle transition section. A receptacle inner wall extends perpendicular to the receptacle outer wall. A second terminal is positioned in the at least one receptacle. A retention member is provided in the receptacle mating section. The continuous outer wall and the continuous receptacle outer wall form a grounding shield minimizing signal leakage from the first terminal and the second terminal.

A coupler couples a first connector with a second connector wherein each of the connectors is coupled to exactly two electrical conductors. Each coupler can be utilized in a shielded (e.g., metal) or non-shielded (e.g. non-metal) form as appropriate to a specific application. Each coupler includes exactly one pair of pin contacts, preferably with a square or rectangular cross- section. Each end of the pin contacts includes four tapered faces that join at a flattened apex and are configured to be received by the tuning fork contact of the connector. The pair of pin contacts are offset from one another and cross one another within the coupler to maintain electrical polarity as electricity travels from the tuning fork contacts of a first connector to the pin contacts of the coupler and onward to the tuning fork contacts of a second connector.

A coupler couples a first connector with a second connector wherein each of the connectors is coupled to exactly two electrical conductors. Each coupler can be utilized in a shielded (e.g., metal) or non-shielded (e.g. non-metal) form as appropriate to a specific application. Each coupler includes exactly one pair of pin contacts, preferably with a square or rectangular cross- section. Each end of the pin contacts includes four tapered faces that join at a flattened apex and are configured to be received by the tuning fork contact of the connector. The pair of pin contacts are offset from one another and cross one another within the coupler to maintain electrical polarity as electricity travels from the tuning fork contacts of a first connector to the pin contacts of the coupler and onward to the tuning fork contacts of a second connector.

A grounding device for maintaining a ground path between a component of a connector and an interface port when the grounding device flexes includes a sealing member configured to form a conductive ground path between a component of a connector and an interface port. The sealing member comprises a sealing portion that is configured to overlie a grounding portion toward a radial direction of the connector when the connector is assembled, and the sealing portion and the grounding portion of the sealing member are configured to flex when a force is applied to the sealing member so as to maintain a ground path between the component of the connector and the interface port when the sealing portion and the grounding portion flex and when a force is applied to the sealing member during operation of the connector.

A wafer includes a number of conductive terminals and an insulating frame. The conductive terminals include differential signal terminals, a first ground terminal and a second ground terminal. Each conductive terminal includes a connection portion and a contact portion. The connection portions of the differential signal terminals, the first ground terminal and the second ground terminal are located in a first plane. The first ground terminal includes a first torsion portion and the second ground terminal includes a second torsion portion. The contact portion of the first ground terminal and the contact portion of the second ground terminal are both perpendicular to the first plane. This present disclosure can provide better shielding effect, reduce crosstalk and improve the quality of signal transmission. In addition, the present disclosure also relates to a backplane connector having the wafer.

A wafer includes a number of conductive terminals and an insulating frame. The conductive terminals include differential signal terminals, a first ground terminal and a second ground terminal. Each conductive terminal includes a connection portion and a contact portion. The connection portions of the differential signal terminals, the first ground terminal and the second ground terminal are located in a first plane. The first ground terminal includes a first torsion portion and the second ground terminal includes a second torsion portion. The contact portion of the first ground terminal and the contact portion of the second ground terminal are both perpendicular to the first plane. This present disclosure can provide better shielding effect, reduce crosstalk and improve the quality of signal transmission. In addition, the present disclosure also relates to a backplane connector having the wafer.