Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat
Officially Licensed GameCube Controller Wannabes for Wii U and Nintendo Switch - YouTube
Wii U Gamecube Controller Adapter〔USA〕 Brook Gaming - Official Brook Gaming Store
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GBros. Adapter | 8BitDo
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raphnet. - Gamecube controller to Wiimote adapter
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
GameCube Controller for Nintendo Wii and GameCube [2 Packs]
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
Amazon.com: Hyperkin ProCube Wireless Controller for Wii U (White) : Everything Else
How to Connect a GameCube Controller to the Wii - Howchoo
GameCube Controller Adapter for Wii & Wii U (Dual Pack), White
Confirmed: The Wii U GameCube Controller Adapter will not work on DDR, Active Life, or Cyberbike | Gaming.Fit
Keten Gamecube Controller Adapter para Switch, Wii U and USB PC, Control de Gamecube Adaptador para Super Smash Bros,Plug & Play (Negro) : Amazon.es: Videojuegos
How to use the Official GameCube Controller Adapter for Wii U in Dolphin - Dolphin Emulator Wiki
Nintendo Support: How to Use Nintendo GameCube Controllers
Tutorial: How to use your GameCube Controller Adapter for Wii U on the vWii - YouTube
How to Connect a GameCube Controller to the Wii - Howchoo