3rd Party Gamecube Adapter

[Dmillz]

I recently bought a third party gamecube adapter and was wondering what driver I should be using for it to function correctly in dolphin and how exactly I should format it within dolphin. (it has an option between wii u and pc). Any help is appreciated.

http://www.amazon.com/Gamecube-Controller-Adapter-Wii-Dolphin-U/dp/B00SAZHOMO/ref=sr_1_12?s=videogames&ie=UTF8&qid=1443651397&sr=1-12&keywords=gamecube+adapter