Things You'll Need
Instructions
Plug the wider portion of the GameCube Game Boy Advance Link Cable into the "EXT" port on your Game Boy device.
Run the other end of the cord into an open controller slot on the GameCube console.
Turn on your GameCube and load the game you wish to play. "Sapphire" can be linked to "Pokémon Box," "Pokémon XD: Gale of Darkness," and "Pokémon Colosseum."
Load your copy of "Pokémon Sapphire" into the Game Boy Advance and turn the power on.
Follow the on-screen instructions to move data between games or activate special syncing features.