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X9DBU-3F/X9DBU-iF Motherboard User's Manual
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Special Features
Recovery from AC Power Loss
The Basic I/O System (BIOS) provides a setting that determines how the system will
respond when AC power is lost and then restored to the system. You can choose for
the system to remain powered off (in which case you must press the power switch
to turn it back on), or for it to automatically return to the power-on state. See the
Advanced BIOS Setup section for this setting. The default setting is Last State.
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PC Health Monitoring
This section describes the features of PC health monitoring of the motherboard. This
motherboard has onboard system management fi rmware that supports PC health
monitoring. An onboard voltage monitor will scan the following onboard voltages
continuously: 1.5V, 1.8V, +3.3V, 3.3V Standby, +5V, +5V Standby and Battery Volt-
age. Once a voltage becomes unstable, a warning is given, or an error message
is sent to the screen.
Fan Status Monitor with Firmware Control
The PC health monitor chip can check the RPM status of a cooling fan. The on-
board CPU and chassis fans are controlled by the fi rmware thermal management
under IPMI.
Environmental Temperature Control
A thermal control sensor monitors the CPU temperature in real time and will turn
on the thermal control fan whenever the CPU temperature exceeds a user-defi ned
threshold. The overheat circuitry runs independently from the CPU. Once it detects
that the CPU temperature is too high, it will automatically turn on the thermal fan
control to prevent the CPU from overheating. The onboard chassis thermal circuitry
can monitor the overall system temperature and alert the user when the chassis
temperature is too high.
Note: To avoid possible system overheating, please be sure to provide
adequate airfl ow to your system.
System Resource Alert
This feature is available when used with SuperDoctor III in the Windows OS
environment or used with SuperDoctor II in Linux. SuperDoctor is used to notify
the user of certain system events. For example, you can confi gure SuperDoctor to
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