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Controller Adapter for Super NES Classic Edition/Wii/Wii U - Compatible with Super NES Controllers — Gametrog
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Wii U's GameCube Adapter Will Only Work with Smash Bros. - GAMING TREND
Confirmed: The Wii U GameCube Controller Adapter will not work on DDR, Active Life, or Cyberbike | Gaming.Fit
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Confirmed: The Wii U GameCube Controller Adapter will not work on DDR, Active Life, or Cyberbike | Gaming.Fit
4-Port GameCube Controller Adapter for Switch Wii U PC Mac
Amazon.com: CLOUDREAM Gamecube Controller Adapter for Switch Gamecube Adapter Wii U and PC, Super Smash Bros Choice Support Four Gamecube Controller and 70IN Long Cable : Video Games
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TTX Tech GameCube Controller Adapter for Wii U and Switch - Micro Center
Wii U Gamecube Controller Adapter〔USA〕 Brook Gaming - Official Brook Gaming Store
Mayflash GameCube Controller Adapter for Wii & Wii U (Dual Pack), White - Walmart.com