Lol lol!!! GameCube's adaptor is like touching the ground. Say, if you play online with GameCube for too long on a carpet, the carpet might burn.
https://pc.watch.impress.co.jp/docs/a...0824/nin08.jpg
You see, the adaptor and all those other peripherals are to connect at the bottom of the GameCube.
https://pc.watch.impress.co.jp/docs/a...0824/nin14.jpg
https://pc.watch.impress.co.jp/docs/a...0824/nin15.jpg