Wireless Gc Converter Adapter For Switch/pc Wired Gamecube & Wii Classic Controllers Gc To Switch+vibration/screen Capture/turbo - Usb Receiver Adapter - AliExpress
I found a Classic Controller to PC USB Adapter
GameCube Controller Adapter for Wii U, PC USB and Switch — oklestore
ELECOM Wii USB Adapter, Game Classic Controller / Classic Controller Pro to USB, Adapter for Windows PC for only one Player, 1m / 39 inch Length (JC-W01UWH) - Buy Online - 74649291
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB by L