Connect your classic controllers to the Gamecube and Wii!  Swap between two KEY MAPPING modes (for N64 controllers only)- There are two built-in KEY MAPPING modes, which are specially designed to match the key settings of different N64 games on Wii (Virtual Console). Button Swap function (for N64 controllers only)- Allows user to swap any buttons freely.Analog Stick Adjust function(only for fixing defective analog stick of N64 controllers).- After being used for a long time, the analog stick of most old N64 controllers could not reach their full range. This function could solve the problem.Auto Fire function (for PS / PS2 / Wii Classic controllers only)- Allows user to enable Auto Fire for all buttons freely.  Play your favorite games with your favorite controllers!