This product is Mayflash of the adapter from Nintendo to in any way and even offers the option of being able to use it also for the PC. In Super Smash Bros. for Wii U, I can not detect any input delays and all my GC controllers were recognized. For this reasonable price (I got it for around 25 bought here on Amazon) should grab my opinion also more likely to Mayflash adapter than the original Nintendo, because Nintendo adapter provides no added value and both adapters appear functionally identical.