A method for improving a data transmission speed and an electronic device implementing the same are provided. The electronic device includes a USB connection unit configured to be connectable to an external electronic device and including designated data reception channels and data transmission channels, a switch unit configured to switch an electrical connection between the data reception channels and data transmission channels, and a control unit configured to confirm device attribute information of the external electronic device that is connected through the USB connection unit and to control the switch unit to switch the electrical connection so that at least one data reception channel functions as a data transmission channel if the connected external electronic device is a display device.