ok i try change recalbox.conf but nothing change

How can i easily change recalbox.conf?

Im using RPi 3 B and with recalbox 4.1, the controller is not bluetooth its use usb port
https://www.amazon.it/GameSir-G3w-Controller-Gamepad-Joystick/dp/B019PSLC36/ref=sr_1_2?ie=UTF8&qid=1489518282&sr=8-2&keywords=gamesir

GameSir G3w Wired Game Controller is a controller compatible with android windows and ps3 console so i think its strange that my raspberry pi 3 cant even see it, i try with a generic usb controller and everything work but i need gamesir controller for his stand for making it portable. Sorry for bad eng