Electrical connector assembly with complementary contact unit

A method of mating an electrical connector assembly, comprising steps of:

• providing a plug connector with a long plug contact and a short plug contact sharing a same position along a transverse direction, wherein the long plug contact is closer to a first plug mating face thereof, which faces toward an exterior along a front-to-back direction perpendicular to the transverse direction, than the short plug contact is, while the short plug contact is closer to a second plug mating face thereof, which faces toward the exterior along a vertical direction perpendicular to both the transverse direction and the front-to-back direction, than the long plug contact is;
• providing a receptacle connector with a long receptacle contact and a short receptacle contact sharing within a same mating slot therein, wherein the long receptacle contact is closer to a first receptacle mating side thereof, which faces toward the exterior along the front-to-back direction, than the short receptacle contact is, while the short receptacle contact is closer to second receptacle mating side, which faces toward the exterior along the vertical direction, than the long receptacle contact is;
• and
• mating the plug connector into the receptacle connector either along the front-to-back direction via confrontation between the first plug mating face of the plug connector and the first receptacle mating side of the receptacle connector, or along the vertical direction via confrontation between the second plug mating face of the plug connector and the second receptacle mating side of the receptacle connector to have the long plug contact mated with the short receptacle contact, and the short plug contact mated with the long receptacle contact without risks of shorting between the short plug contact and the short receptacle contact during a mating procedure along the vertical direction.

An electrical connector for mating with a complementary connector comprising:

• an insulative housing defining a first mating face facing toward an exterior along a front-to-back direction, and a second mating face facing toward the exterior in a vertical direction perpendicular to the front-to-back direction;
• a first contact and a second contact located at a same position in a transverse direction perpendicular to both the front-to-back direction and the vertical direction;
• wherein
• the mating port including a plurality of mating cavities spaced from one another in a vertical direction;
• the first contact is closer to the first mating face than the second contact is along the front-to-back direction while the second contact is closer to the second mating face than the first contact is along the vertical direction.