The male connector is equipped with protruding terminals, while the female connector is equipped with a recessed socket below the surface of the insulator. When you plug two specially-made connectors together, the two parts establish an electrical connection by "butting". In order to ensure that the two connectors are correctly inserted, many products have a guide design, that is, a functional design that prevents unmated connectors from being accidentally inserted due to human error. From military to aerospace, from medical equipment to consumer electronics, connectors play an important role in many applications. And all of this, in the final analysis, still returns to a little function: connection. The connector plays the role of connecting and disconnecting the circuit in the circuit.