An electronic device assembly includes an electronic device, a transfer card configured for connecting the electronic device to another electronic device, and a fixing board for mounting the transfer card to the electronic device. The electronic device includes a front wall defining a port. The transfer card is coupled to the electronic device. The transfer card comprises a printed circuit board perpendicular to the front wall, a first connector arranged on the elongated printed circuit board and protruding beyond a first longitudinal edge of the printed circuit board for engagement in the port in the front wall of the electronic device, and a second connector arranged on the printed circuit board and protruding beyond an opposite second longitudinal edge of the printed circuit board.