Things You'll Need
Instructions
Connect the Game Boy end of the Game Boy-to-GameCube cable to the data port on your Game Boy.
Connect the GameCube end of the Game Boy-to-GameCube cable to the GameCube port on your GameCube-to-USB adapter.
Connect the USB end of the GameCube-to-USB adapter to an available USB port on your computer. Your Game Boy-to-USB cable is now constructed and ready for use.