Question There are two fan speed control modes in X10SAE BIOS. For "Standard" mode, the technical manual says @50% of PWM Cycle. Does it mean that fan will be running at a fixed 50% PWM duty cycle? Answer No. The 50% duty cycle represents the initial fan speed when the board is booting and the temperature information is not available. Once the information becomes available, the fan speed will be automatically adjusted based on a preset speed control curve. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com.  Enter your email address below if you'd like technical support staff to reply:  Please type the Captcha (no space) M 7 Q B FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 17307 Peripherals: - Cooling Fans 10/25/13 MK     Print Answer