The GameCube Controller Connector allows you to attach up to two GameCube Controllers, or wireless GameCube Controllers, to a Wii U console and PC USB. Switch to Wii U Switch to 'PC' or Wii U' mode by using the switch located on the side. Use the switch on the left side to change between PC and GC mode. Supports GC/Wii Emulator Dolphin. Supports Vibration Feedback built-in with no delays. The driver is required if you need the vibration feedback on the Windows.Please download it from www.mayflash.com/Support/Download. Compatible with Windows XP Vista Windows 7 Windows 8 (32-bit and 64-bit) and Mac OS.