Wii U's GameCube controller will support more than just Smash Bros. [updated] | VentureBeat
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Lexuma GameCube 控制器連接器- 適用於Wii U, Nintendo Switch和PC USB – Lexuma Distribution
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GameCube Controller Adapter For Wii PC and Nintendo Switch
GameCube Controller for Nintendo Wii and GameCube [2 Packs]