raphnet. - Classic controller to Gamecube/Wii adapter
Amazon.com: Y Team Controller Adapter for Gamecube, Compatible with Nintendo Switch, Super Smash Bros Switch Gamecube Adapter for WII U/PC with 4 Port : Video Games
Wii U Gamecube Controller Adapter〔USA〕 Brook Gaming - Official Brook Gaming Store
Amazon.com: Super Smash Bros. GameCube Adapter for Wii U : Nintendo Gamecube Controller Adapter: Video Games
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
Amazon.com: Gamecube Controller Adapter for Switch/Switch OLED.Gamecube Adapter Compatible with PC Wii U.Adapter with 4 Ports 6 FT(1.8M) Cable Support Turbo and Vibration Features Super Smash Bros : Video Games
Amazon.com: GameCube Controller Adapter for Wii U, PC USB & Switch - NEXiLUX : Video Games
Gamecube Controller Adapter for Wii U - Solaris Japan
Amazon.com: Mayflash GameCube Controller Adapter for Wii U and PC USB, 4 Port 2-Pack : Video Games
Wii U 4 Port Gamecube Controller Adapter
Gamecube Controller Adapter for Wii U & PC (2 Ports) - Walmart.com
Amazon.com: Mayflash GC Controller Adapter for Wii & Wii U (Dual Pack), White : Video Games
raphnet. - SNES controller to Wii/Gamecube cable
Mayflash GameCube Controller Adapter for Wii & Wii U (Dual Pack), White - Walmart.com