Featuring 12 controllable single LEDs, great light coverage, and uniform color and brightness, the built-in LED ring can paint your build with 16.8 million colors. Monitor the fan performance, adjust the fan speeds, and customize the lighting effects for up to 80 fans with Thermaltake's patented Riing Plus RGB Software. The included controller is designed with a DIP switch on the back. Hence, you can set a number for each controller easily. You can add up to 5 fans to one fan controller and up to 16 controllers to the software. The controller and the coding guide are included in all packs.