The Kaimana Khameleon is able to switch between fightstick mode and Kaimana mode through two methods:
Using the on-board push button
Holding HOME+K1 on the fightstick when plugging in the USB
You should confirm this works by connecting your fightstick to a computer, you should hear the unplugging/plugging sound in Windows when using the push button method. If you are using the second method you will see the new device dialog.