Electrical device

An electrical connector comprising:

• an insulative housing defining a horizontal mating slot for receiving a mating plug;
• a first contact module received within the housing and comprising a first pair of grounding contacts, a first pair of signal contacts disposed between the first pair of grounding contacts for transmitting a differential signal, a first insulative member molded with the first pair of grounding contacts and the first pair of signal contacts, and a first metallic grounding bar fixed by the first insulative member, the first metallic grounding bar electrically connected with the first pair of grounding contacts, but not electrically connected with the first pair of signal contacts;
• and
• a second contact module received within the housing and disposed opposite to the first contact module.

An electrical connector assembly comprising:

• a lower connector unit comprising:
• a lower insulative housing forming a pair of lower vertical side walls opposite to each other in a transverse direction, and a lower vertical front wall extending in said transverse direction and defining a lower horizontal mating slot;
• and
• a lower contact module received within the lower housing and comprising an lower contact unit comprising a plurality of lower contact parts stacked together in a vertical direction perpendicular to both the transverse direction and a front-to-back direction, each of said lower contact parts comprising a plurality of lower contacts integrally formed with a plurality of lower insulative bars via insert-molding, said lower contacts comprising a pair of lower grounding contacts and a pair of lower differential pair signal contacts disposed therebetween in the transverse direction, each of the lower insulative bar equipped with a lower metallic grounding bar having a plurality of lower tabs mechanically and electrically connecting to the corresponding lower grounding contacts thereof;
• and
• an upper connector unit comprising:
• an upper insulative housing stacked with the lower insulative housing in the vertical direction, the upper insulative housing forming a pair of upper vertical side walls opposite to each other in the transverse direction, and an upper vertical front wall extending in said transverse direction and defining an upper horizontal mating slot;
• and
• an upper contact module received within the upper housing and comprising an upper contact unit comprising a plurality of upper contact parts stacked together in the vertical direction, each of said upper contact parts comprising a plurality of upper contacts integrally formed with a plurality of upper insulative bars via insert-molding, said upper contacts comprising a pair of upper grounding contacts and a pair of upper differential pair upper signal contacts disposed therebetween in the transverse direction, each of the upper insulative bar equipped with an upper metallic grounding bar having a plurality of upper tabs mechanically and electrically connecting to the corresponding upper grounding contacts thereof.