Wii/Wii U/Switch - Adapter - GC Controller Adapter - 4 Port (Mayflash)
 
Switch to "Wii U" or "PC" mode by using the switch located on the side
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
New firmware with Pokken Tournament and Super Smash Brothers support