I have an Ultra Rogue m925 case and it has fan switches built into the case. This bothers me because I just want the fans to run automatically for the speed the computer needs. I don't know for example, of the switches represent an absolute speed, or if they mean above or below an automatic sensor based speed. Will I burn out my fan and suffer the noise if I leave them on high as a precaution? Will I melt my computer if I leave them off for the sake of quiet? Very frustratingly confused.