I sent my first keyboard back because of this and a faulty usb connector. The replacement now has 4 leds out and the rest are uneven brightness. I've requested (and been granted) a refund from my supplier. The switch on my desktop cooler master psu packed up and the front usb ports on the cooler master desktop case don't work, both less than 2 years old. Don't think I'll be buying any more cooler master stuff.