A connector (130, 230, 330) for
coupling a first electronic device (110, 210, 310) and a second electronic device (120, 220, 320) to a power source (140, 430) so that the power source (140, 430) provides current to the first electronic device (110, 210, 310) and the second electronic device (120, 220, 320). The connector (130, 230, 330) comprises: a first connector component (133, 233, 333) for
coupling with the first electronic device (110, 210, 310) and the second electronic device (120, 220, 320). , 210, 310)
coupling; a power supply connector
assembly (134, 234, 334) for coupling with a power source (140, 430); a power line (136a, 136b, 136c, 136d, 136e) for coupling a second electronic device (120, 220, 320) and a first connector
assembly (133, 233, 333) to the power supply connector
assembly (134, 234, 334); a data line (131, 231, 331), one end of the data line (131, 231, 331) is connected to the second electronic device (120, 220, 320) and the first connector assembly (133, 233, 333) The sub-device (120, 220, 320) is coupled, and the other end is coupled to the first connector component (133, 233, 333); and the power supply status detection circuit (135, 235, 335) is coupled to the power supply connector component (134, 234, 334) and is configured to detect whether the power supply connector component (134, 234, 334) is coupled to the power supply (140, 430); a message
transmission line (132, 232, 332), one end of the message
transmission line (132, 232, 332) is coupled to the power supply status detection circuit The power supply status detection circuit (135, 235, 335) is configured to: upon detecting that the power supply connector assembly (134, 234, 334) is coupled to the power supply (140, 430), send a power supply (140, 430) connection message to the second electronic device (120, 220, 320) via the message
transmission line (132, 232, 332).