How to Connect a GameCube Controller to the Wii - Howchoo
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
Just Got One of Those Gamecube Controllers That Plug Into the Wii Remote. What's the Difference Between These and the Actual Gamecube Controllers? : r/smashbros
Amazon.com: Mayflash GameCube Controller Adapter for Wii & Wii U (Dual Pack), White : Video Games
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
How to mod a Gamecube controller to connect to a Wiimote for Wii U and Wii - YouTube
Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat