Why can the Xbox360 not detect the Arduino Leonardo as keyboard? Arduino Leonardo as keyboard in the computer works! But not with the Xbox360.
The Teensy works perfectly on the PC but how to emulate a keyboard device for the Xbox360. 

I know the Xbox360 has security IC, but a simple USB keyboard works!

What is the diference ?

How i can emulate an usb keyboard for the Xbox360?
Like Juraj and Majenko said. Arduino Keyboard library does emulate "Boot Keyboard".

I use NicoHood HID library and now it works.