A method for converting a male connector to a female connector. A connector comprising a header, an insert and a female adapter module. The header is equipped with a plurality of pins forming male contacts. The insert ensures the hermeticity of the male pins in the header. The female adapter module is mounted in the header so as to form a female connector. The female adapter module comprises a plurality of sockets forming female contacts. Each female socket is mounted around a male pin, and a locking housing is mounted around the plurality of sockets so as to tighten each female socket around the associated male pin.