Smash Wii U GameCube Controller and Adapter Unboxing - YouTube
GameCube Controller Adapter 4 Port For Nintendo Switch Wii U & PC USB NEW TURBO - Newegg.com
Amazon.com: Brook Gamecube to Wii U Controller Adapter - Support Gamecube Controllers Adapter for Wii U and PC USB Android, up to 8 GC Controllers in The Same time (MAX), Turbo fire
Wii U Super Smash Brothers Edition Gamecube Controller
Adapter For Switch Gamecube Controller Adapter And Wii U And Pc, Super Smash Bros Gamecube Controller Adapter, With Long Cable - Temu
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma