I just purchased a used Alienware Area 51 r2 (Desktop). How do I control the LED lights located on the unit itself? The Alienware Command center does not register any compatible Keyboards, Mice or any other Alienware LED device. The computer is running normally. The LED lights are working BUT I can not control the colors. What should I do? Please provide detailed instructions. 

P.S.
I understand that the Alienware Control center is no longer available for download. Dell discontinued it?