Here's how to get Wii U's GameCube Controller Adapter working on Windows | VentureBeat
GameCube Controller Adapter for Wii U & PC USB for Windows, Wii U
How to Use Wii U Gamecube Adapter on Dolphin (PC) - YouTube
Amazon.com: VOYEE PC Controller, Replacement for Gamecube Controller, Compatible with Wired USB Gamecube Controller/PC Windows 7 8 10 (Black) : Video Games
A Review of the Hori Battlepad (Third-Party GameCube Controller) : r/nintendo
raphnet. - Dual Gamecube controller to USB adapter
Ubuntu Forums
Massive's gamecube adapter driver dev blog | Wii U GCN USB Driver
Gamecube USB controller not working : r/DolphinEmulator
EXLENE Wireless Gamecube Controller for Switch/PC Review (Hardware) - Official GBAtemp Review | GBAtemp.net - The Independent Video Game Community
Dolphin now has native GameCube controller support with Wii U adapter | PC Gamer
MayFlash 4 Ports GameCube Controller Adapter for Wii U & PC USB (W012) – SupremeGameGear
Amazon.com: Mayflash GameCube Controller Adapter for Wii U, PC USB and Switch, 4 Port : Video Games
How to Use a GameCube Controller with Dolphin - Make Tech Easier
How to Use a GameCube Controller with Dolphin - Make Tech Easier
3in1 4 Ports for GameCube GCN Controllers USB Adapter Converter for Nintend Switch/UWii/Emulator Dolphin PC Turbo/Home Function|USB Receiver Adapter| - AliExpress
How to Use a GameCube Controller with Dolphin - Make Tech Easier
Dolphin Emulator - How to use the Official GameCube Controller Adapter for Wii U in Dolphin
MAYFLASH 2 Ports GC GameCube Controller Adapter for Wii U PC USB Nintendo Switch 6910201504099 | eBay
These Hori GameCube controllers are optimised for Switch
How to Use a Real GameCube Controller or Wiimote in Dolphin
Mayflash GameCube Controller Adapter for Wii U and PC USB (4 Port) - Walmart.com
4 Controllers for Gamecube with 4 Extension Cables and 4-Port USB Switch PC Wii | eBay
PowerA GameCube Style Wired Controller for Nintendo Switch Wired: Black 1507843-01 - Best Buy
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma