The GameCube controller adapter allows you to connect up to two GameCube controllers (or wireless GameCube controllers) to a Wii u system, PC USB, Switch
Switch mode by using the switch located on the side.
Supports the GC/Wii emulator dolphin
Supports the built-in vibration feedback with no delays
Compatible: Windows XP, Vista, Windows 7, Windows 8, 32 bit and 64 bit and Mac OS under the PC mode