raphnet] Classic Controller / Wii Guitar to USB adapter - V3 | eBay
Raphnet makes an adapter cable that converts a classic controller (Wii classic, Wii classic pro, NES classic, SNES classic) into a GameCube port. If you can't stomach paying $200 for the Hori
ELECOM Classic Controller Nintendo Wii Guitar to USB Adapter White Nunchuck | eBay
Buy Wii Classic Controller Pro / Nunchuk to PC PS3 Mac USB adapter - Golden Shop
I found a Classic Controller to PC USB Adapter
Amazon.com: 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) : Video Games
Amazon.com: May Flash NES/SNES Controller Adapter for NES Classic and Wii U/ Wii : Video Games
ELECOM Classic Controller Wii Guitar to USB adapter 4953103974845 | eBay
Raphnet Wii Classic Controller to USB Adapter V3 in Stock - Etsy