I had recently asked about disabling the blue LEDS on my ANTEC "Illusion" case that I have because I no longer cared for the bright blue lights at night as I prefer my room dark at night. Anyways, I had taped them out with electrical tape and it worked ok, but I recently decided to see if I could cut the LED wires.
Well, just to let people know, I cut all the "silver" lines (one of the leads) going to each LED on each fan and it works! The fans all still work and their "speed control" works also and I no longer have the LEDs. So cutting the LED leads in this case DOES NOT ruin the fan.