Laser Bear
GameCube ETH2SP1 Ethernet Adapter For Swiss BBA Alternative
GameCube ETH2SP1 Ethernet Adapter For Swiss BBA Alternative
Couldn't load pickup availability
Pre-Order Note: Coupon codes may be disabled for some pre-order and exclusive items.
Estimated to ship March 2026
If this date is in the past please check the Pre-Order Status Page. We leave this, original, estimated date up for transparency.
Updates will be posted on the Pre-Order Status Page:
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 Swiss v0.6r1984.
Swiss hangs after booting with the Ethernet cable connected: The SP1 port can occasionally have an interrupt that fails to clear, causing Swiss to hang. A power cycle may resolve this, but you may need to disconnect the Ethernet cable during boot and reconnect it once the console is powered on. This is an intermittent issue that occurs randomly with fully configured adapters.
Share
