Gamecube USB Controller - Purple - for Windows, Mac, and Linux - by Mars Devices - Walmart.com
GameCube Controller Adapter for Wii U and PC USB Two ports
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB by L
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
You can use the Smash Brothers Gamecube adapter in portable mode with a USB C adapter (Rumble works too) : r/NintendoSwitch
raphnet. - Gamecube to USB adapter - V3
USB-C to GameCube/Wii Cable – Frame1
Mayflash GameCube Controller Adapter for Wii U and PC USB (4 Port) - Walmart.com
USB-C to Gamecube Cable – 20XX
Hyperkin CirKa Premium GameCube-Style USB Controller for PC/ Mac - Black - Micro Center
Retro Link GameCube Style USB Wired Controller - Walmart.com
NEXiLUX Nintendo Switch GameCube Controller Adapter for Wii U, PC USB – J&L Video Games New York City
raphnet. - Gamecube to USB adapter - V3
Amazon.com: GameCube Controller Adapter : Video Games
raphnet. - Gamecube controller to USB adapter with vibration support
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 Nintendo
Gamecube USB controller adapter | 3-in-1 Magic Joy Box (one … | Flickr
Retro Controller Adapter for Nintendo Switch™ – Nyko Technologies
4 Port Gamecube NGC Controller Adapter Nintendo Wii U Switch & PC Adaptor USB UK 5055538676024 | eBay
GameCube Controller Adapter 4 Port Compatible with Nintendo Switch Wii U & PC USB