CM RGB LED Controller in Peripherals Posted September 14, 2019 Picked up the Cooler Master LED RGB Controller today. works amazing with my CM ML240L AIO. Was able to use the splitter and have it control not only the LED's on the fans, but the LED on the CPU pump as well. I also like how it has a magnet on the bottom of it for mounting it to anywhere that is metallic on the case. Software is pretty easy to use as well. Really well made.