Am I the only one who can't get this to work?
I'm on 4.0.0. Official Wii U Gamecube adapter. I've tried my Wavebird, an old GameCube Controller from release, and a Smash GC controller. Nothing works. I've tried connecting both the USB plugs, tried only the black one, tried different ports etc, nothing. I went to the connect controllers menu and pressed L and R, like GameXplain shows, on all my attempts..
Wavebird connector isn't giving any signal either.
Has anyone gotten it to work on a European unit?
Edit: Nevermind.
This comment helped me: "If anyone's having trouble, go to settings and enable wired communication. Then proceed to the "change grip order" screen and hold +/- on your joycon/pro until you get the search screen. Then press B to close. After I did that, it picked up my GCN controller as a usb controller."