GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
8Bitdo Gbros. Wireless Adapter for Nintendo Switch – SupremeGameGear
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
Gbros
Hardware Review: 8BitDo GBros. Adapter - Use Your GameCube Pad Wirelessly With Smash Bros. Ultimate | Nintendo Life
8BitDo Gbros. Wireless Adapter - Use Gamecube Controller on Nintendo Switch / PC | Fabricating and Metalworking
Amazon.com: 8BitDo USB Wireless Controller Adapter 2 Converter Dongle for Switch/Switch OLED,Steam Deck,Windows,Raspberry Pi, macOS, PS5/PS4/PS3 Controller,Xbox Series X/S,Xbox One Bluetooth Controller OTG Cable : Video Games