GameCube Controller Adapter for Wii U and PC USB, 4 Port Spinz&reg; GameCube controller adapter converter for the Nintendo Wii U System Play a variety of games on your Wii U using your classic GameCube controller Invite your pals to join in the fun by connecting up to four original GameCube controllers to your Wii U With two GameCube Controller Adapters, up to eight GameCube controllers can be used at the same time. Compatible with Super Smash Bros. Wii U.