Nintendo GameCube SD2SP2 SD Card to Serial Port 2 Micro SD Card Adapter | eBay
Gamecube Ports Explained | So that's what those ports are for! 🤯🎮 | By UNILAD Tech | Facebook
Amazon.com: AreMe Micro SD Card Adapter TF Card Reader for Gamecube Serial Port 2 (SD2SP2 Pro) : Electronics
Nintendo GameCube DOL-001(USA) Purple Bottom *w/Power Board & Button*-Just OK | eBay
There is a missing port on my DOL-001 gamecube and i was made aware of this because of a GC loader mod where the sd card reader plugs in the bottom, The
Nintendo GameCube DOL-001(JAPAN) Labeled ONLY SILVER EMPTY Bottom Case-Good-READ | eBay