Abstract: Electrical socket connector (10) for pluggable connection to a complementary plug connector (40), comprising a casing (11), a connection terminal assembly (13) mounted in the casing for connection to a complementary connection terminal assembly (43) of the plug connector, an identification system for identification of the plug connector, and an electronic switch (32) for secure connection between the socket and plug connectors. The identification system comprises a display unit (12) for connection status and a processing unit configured to read a plug identifier provided by an identifier module (46) of the plug connector each time the socket and plug connectors are connected together, and to control the electronic switch and the visual aspect of the display unit based on the plug identifier output.