How to mod a Gamecube controller to connect to a Wiimote for Wii U and Wii - YouTube
Amazon.com: Mayflash GC Controller Adapter for Wii & Wii U (Dual Pack), White : Video Games
GameCube controller - Wikipedia
Your old GameCube controllers now work with the Nintendo Switch | Ars Technica
Wii U can use two GameCube controller adapters
Tutorial: How to use your GameCube Controller Adapter for Wii U on the vWii - YouTube
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: Cipon Gamecube Controller, Wired Controller Gamepad Compatible with Nintendo Wii/GameCube - Enhanced (Black & Black) : Video Games
raphnet. - Gamecube controller to Wiimote adapter
How to Use a Real GameCube Controller or Wiimote in Dolphin
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
How to use your GameCube controller with Nintendo Switch | iMore