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Generic PSX to Gamecube Joypad Converter part 1 - Compatibility - YouTube
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I have an old adapter that lets me use a ps2 controller on my GameCube, but it won't work! Does anyone know why? : r/Gamecube
6 in 1 RF RFU Adapter for Genesis 2 & 3 N64 SNES Gamecube PS1 PS2 PS3 #U15 | eBay
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FIOTOK GameCube Controller Adapter – FIOTOK
PS2/Xbox/GameCube to PC Adapter - 3 in1 Magic Joy Box
Mad Catz Auto RF Adapter Switch Nintendo SNES N64 GameCube PS1 PS2 PS3 & OG Xbox | eBay
EH0053 Playstation 2 PS2 Controller To Xbox Gamecube Converter Adapter Cable Black
Amazon.com: Gemini GGE815 Universal Video Game Control Pad Converter : Video Games
PS2 to GameCube Controller Adapter - How well does it work? | GBAtemp.net - The Independent Video Game Community
Gamecube Controller Adapter for Wii U & PC (2 Ports) – Flashback Limited - Repair, Replay, Relive
Switch Gamecube Controller Adapter, Super Smash Bros Gamecube Adapter for Nintendo Switch, Wii U and PC USB with 4 Ports - Plug & Play, No Drivers Needed - Newegg.com
GameCube Controller Adapter for Wii U and PC USB Two ports
Controller Adapter PS2 to Gamecube - PS2 – Gameroom
Controller to USB Adapter for Sony PlayStation® Controllers - XYAB
BROOK Switch Pro/Xbox One/PS3/PS4/PS5 to PS Classic/PS2 Super Converter