A method of connecting signal lines, a printed circuit board assembly and an electronic apparatus having the same. The present general inventive concept provides a printed circuit board assembly in which signal lines are connected between a first board and a second board, including a connector having a plurality of pins provided in one of the first board and the second board, and a connector coupling member having a plurality of pin housings which come in contact with the pins by being deformed in a pin coupling direction to electrically connect to the pins and which are provided in a surface of the other of the first board and the second board.