Mayflash GameCube Controller Adapter for Wii U, PC USB and Switch, 4 Port

Make sure this fits by entering your model number.
Switch to “Wii U” or “PC” mode by using the switch located on the side
The GameCube Controller Adapter allows you to connect up to four GameCube controllers (or wireless GameCube controllers) to a Wii U system, PC USB, Switch
Supports the built-in Vibration Feedback with no delays by plugging the two USB ports of the adapter into your Wii U system or PC USB connector ports
Compatible with Windows XP, Vista, Windows 7,Windows 8,32 bit and 64 bit and Mac OS under the PC mode
The driver is required if you need the vibration feedback on the PC mode