The creator of this video notes that you’ll need to upgrade the firmware of your adapter using PC, Linux, or Mac before it’ll work with the Switch. The best part? The most recent firmware update for Switch now supports this adapter. It’s a super handy device called the Mayflash GameCube Adapter and features four ports for controllers. for Wii U came out, we posted about a GameCube controller adapter that would allow you to use your old GameCube controllers on the Wii U.
