Mac High Sierra - Gamecube Adapter for Wii U Not Detected

[nikkroy]

I've tried everything, from disabling the SIP to following the setup from the beginning again (twice). It's not my laptop, as it definitely detects the USB. The most peculiar part is that it worked over the last month or so, and all of the sudden stopped working.

Please let me know if there is anything you can think of that I might be able to try. Thank you!