Kabalo GameCube to Wii U Controller Adapter Converter Third party GameCube controller adapter converter for using GameCube controllers on the Nintendo Wii U. Comaptible with any controller using a GameCube connection. USB connection for the Wii U console or PC (switchable) - 1m lead included. Play a variety of games with your classic GC or WaveBird controller! Compatible with Super Smash Bros. Easy to set up and use.