@TMNTturtlguy Effectively i have thought about it and it is a good idea, but i have already one usb port used by my keyboard, another one by my hard disk, and i would like to keep 2 usb ports free. It would let me to eventually connect other devices such as bluetooth guns (to play "time crisis" for instance) or to add 2 more arcade joystick for 4 players game and so on. I could use a usb HUB to do all theses things but i dont want to add too many intermediate electronic composants to the chanel. Either way if it had been the only solution, i will have chosen this method :)
And if someone who reads this topics has the same issues that i have encountered, i'm hoping he will follow your advice. That's the easiest way too do. I think. ^^
Thank you for everything my friend. Cheers from France