Dolphin, the GameCube and Wii emulator - Forums

So I'm curious (but too tired to search through at the moment), is it possible to connect a real Gameboy advance to pc via the wii u gamecube controller adapter? It be awesome if I could transfer the pokemon I got in Colosseum to a cartridge.

No, the wii u adapter doesn't support this.

The GBA adapter requires a serial connection that no Wii U adapter implements, not even the official one. You'd be hitting latency limitations of USB 2.0 even if it did anyways.