Detachable connection port and electronic device having the same

An electronic device comprising a detachable connection port, comprising:

• a main housing, having an opening;
• a main circuit board, provided in the main housing;
• a board-to-board connector, fixed at and electrically connected to the main circuit board, the board-to-board connector comprising a first connector head configured correspondingly to the opening;
• the detachable connection port, detachably insertingly connected at the opening, the detachable connection port comprising:
• a sub circuit board, comprising a gold finger, the gold finger electrically connected to the first connector head;
• and
• at least one socket connector, fixed at and electrically connected to the sub circuit board, the socket connector comprising a second connector head exposed at the opening and an installation portion provided on one side of the second connector head;
• the socket connector fixed at the sub circuit board by means of a sink-plate or mid-mount and
• a fastening element, fixedly connected at the installation portion and the main housing.