1. Connect two GameCube controllers to a Wii or Wii U system.
2. Built in Turbo.
the LEFT STICK and POV Directional Button by pressing the button START
and B for 3 seconds, and switch back by pressing the button START and A
for 3 seconds.
4. Supports ZL button.
5. Compatible with all games supported by the Wii Classic Controller, Wii Classic Controller Pro.
How to connect? Connect the Wii Remote Controller (Wii Remote is not
included in the packaging) to your Wii or Wii U console,
then plug your GC Controller to the adapter,and finally connect the adapter to your Wii Remote Controller.
7. The button A, B, X, Y, L, R and Z can be customized with TURBO.
8. Supports Mario Kart and Super Smash Bros.
9. Does not support Wavebird Wireless Controllers