USB Dolphin adds a High-Speed USB (USB 2.0) port to your GameCube.

It allows you to connect USB storage devices such as USB Drives, USB Sticks, USB Card Readers, among others, to your GameCube. These devices will then be accessible to homebrew software such as Swiss.

What's Included

• USB Dolphin for SP1

Features Specific to SP1 Variant

• USB-A port
• Hardware-based emulation of the original Broadband Adapter (requires a compatible USB Ethernet adapter)
• Network game streaming using Swiss + FSP protocol (e.g. via RetroNAS)
• Broadband Adapter functionality works nativley even without Swiss

Features Shared With Slot A/B Variant

• Present storage device as IDE-EXI (same protocol as M.2 Loader)
• Supports devices with more than 2 TB (theoretical max of 128 PB)
• Speeds very similar to an SD Gecko 2.0 or SD2SP2 2.0

Disclaimer

• 3D printed parts might have minor cosmetic defects
• There might be incompatibilities with some USB mass storage devices
• Supports USB Ethernet adapters that implement USB CDC-ECM (Notably, ASIX-based adapters do not work)
• USB DVD, CD or Floppy drives are not supported

Join the Discord server to ask questions and discuss the adapter.

Special thanks to Silversteel for the PCB and amazing case design!