The Nintendo GameCube Broadband Adapter (BBA) was an official accessory released in 2002 that added an Ethernet port to the console, enabling LAN multiplayer in games like Mario Kart: Double Dash!!, Kirby Air Ride, 1080 Avalanche, and online play in Phantasy Star Online. Original BBA units are now rare and expensive on the secondary market. This adapter provides a modern, affordable alternative.

This SPI Ethernet adapter connects to Serial Port 1, providing a fully self-contained Ethernet module that snaps into the bottom bay of the GameCube with the Ethernet jack accessible from the side of the console; just like the original BBA.

Built on the Wiznet W5500 module, our adapter supports higher interface speeds than the ENC28J60 modules typically found in other third-party adapters.

Compatible Games (via Swiss BBA emulation):

• Mario Kart: Double Dash!! (LAN up to 16 players across 8 consoles)
• Kirby Air Ride (LAN up to 4 players across 4 consoles)
• 1080 Avalanche (LAN up to 4 players across 4 consoles)
• Phantasy Star Online Episode I & II (online via private servers)
• Phantasy Star Online Episode III: C.A.R.D. Revolution (online via private servers)
• Homeland (online/LAN via private servers)

Color Options: Colors are matched as closely as possible to stock consoles. Purple is not a perfect match to Indigo, and Silver is not an exact match to Platinum. You can request a different color and we’ll do our best to accommodate.

Important Note: BBA emulation requires Swiss homebrew software.

Troubleshooting:

Swiss does not detect the adapter: Update to at least