E-NET Gamecube Controller Adapter, 4 Ports for Gamecube Controller USB Adapter Converter for Wii U PC NGC & PC Game Accessory, Support Windows XP, Vista, for Windows 7/8, 32-bit and 64-bit -
Confirmed: The Wii U GameCube Controller Adapter will not work on DDR, Active Life, or Cyberbike | Gaming.Fit
Nintendo GameCube controller adapter coming to Wii U for Smash Bros. - Polygon
4-Port Controller Adapter for GameCube® Compatible with Nintendo Switch® / Wii U® / PC/ Mac®
Gamecube Controller Adapter Wii U Pc Usb Driver | Gamecube Control Adapter Usb - 4 - Aliexpress
GameCube Controller Adapter for Wii U for Wii U
4 Port USB Gamecube NGC Controller Adapter For Nintendo Switch/Wii U /PC 3 in 1 | Wish
Amazon.com: Gamecube Adapter for Nintendo Switch Gamecube Controller Adapter and WII U and PC, Super Smash Bros Gamecube Controller Adapter. Support Turbo and Vibration Features with 180cm Long Cable : Video Games
Controller Adapter for Wii U with White GameCube Controller (Play-Asia.com Bundle) for Wii U
Wii U can use two GameCube controller adapters
GameCube® Controller Adapter - XYAB
Wii U Gamecube Controller Adapter - Brook Gaming
Wii U 4 Port Gamecube Controller Adapter
GameCube Controller Adapter for Wii U + Nintendo Switch [Nintendo Accessory] | eBay
TTX Tech GameCube Controller Adapter for Wii U and Switch - Micro Center
Adapter For Gamecube Controller Compatible With Switch /wii U Super Smash Bros, Support Turbo,vibration Features,four Players - Temu
4-Port Controller Adapter for GameCube® Compatible with Nintendo Switch® / Wii U® / PC/ Mac®
Gamecube Adapter For Nintendo Switch Gamecube Controller Adapter And Wii U And Pc, Super Smash Bros Gamecube Controller Adapter - Chargers - AliExpress
Nintendo Official Wii U GameCube Controller Adapter BRAND NEW SEALED! | eBay
MayFlash 4 Ports GameCube Controller Adapter for Wii U & PC USB (W012) – SupremeGameGear
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