Mad Catz Universal RF Adapter Cord 6004 - Xbox GameCube Nintendo 64 PS2 PS1 XBOX 728658060046 | eBay
GameShark Universal RF Adapter for PS2 PS One Xbox GameCube Nintendo 64 728658004408 | eBay
Gamecube USB controller adapter | 3-in-1 Magic Joy Box (one … | Flickr
Amazon.com: Y Team Controller Adapter for Gamecube, Compatible with Nintendo Switch, Super Smash Bros Switch Gamecube Adapter for WII U/PC with 4 Port : Video Games
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB by L
Microsoft XBox 360 AC Adapter CPA09-010A Power Supply for US region TESTED – ASA College: Florida
8Bitdo GBros (Wireless Switch Adapter for Gamecube Controller) - us.MaxGaming.com
Gamecube Controller Adapter for Wii U - Solaris Japan
Gamecube style controllers on Xbox with adapters. : r/DolphinEmulator
PowerA GameCube Style Wired Controller for Nintendo Switch | Nintendo Switch Wired controllers. Officially licensed. | PowerA