Dear Supermicro representative, I have installed a thermal fan on my Supermicro PIIIDME, but am not convinced that it is being activated when the CPUs reach their threshold temperature, as configured in the BIOS. Does the fan need a driver for the operating system before it will work? If so, then can you please provide me with sufficient information about the motherboard to write such a driver? I am running Linux 2.4.18, which already provides a driver for the SMBus functionality (should that be relevant). Please note that I am *not* asking Supermicro to provide a driver, should one be required. I am merely asking for sufficient hardware specifications for the PIIIDME to allow me to write me own driver, which I would then be able to release freely to the Linux community. For example, would the driver need to do much more than write values to a particular port to turn the fan on and off? If so then could you tell me which values and which port, please? Thank you, Chris Rankin (I don't think that Linux relies upon the BIOS to a great extent, and so I doubt whether any thermal-fan controlling code in the BIOS would have a chance to run. Unless this functionality is handled using hard-wired circuitry on the motherboard itself? I really hve no idea, here. Can you advise, please?) http://www2.lm-sensors.nu/~lm78/author.html __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com