Commit 6f63c1c37faade7f5af02802a4966a3ba1529c20
2019-06-19T06:43:36
Make GameCube controllers only rumble if both USB cables are connected The Nintendo USB GameCube Adapter has two USB connectors. Black for data and grey for additional power for rumble. The Wii U and other software require both cables to use rumble. The rumble is weaker without the second USB cable. Other than that I don't know if there is any negative side affects from using rumble with only one cable.