If you get some error or are unable to 'test' the buttons then you might be boned.
A window should open with listed buttons, axis', D-Pad, etc.Īt that point you should be able to press buttons, triggers, analogs and see reactions on screen. When the new window pops up double click your listed controller. Right-click and choose Game controller settings. Under Devices and Printers in Control Panel find your adapter.
Unless I'm mistaken using the adapter for Wii U on Dolphin requires no config configuration is automatic through Dolphin.
If it's official as in the adapter released for Wii U it may not work traditionally. I can only guess as I don't have the particular adapter.