Desktop Board Features
19
CAUTION
Power supplies used with this desktop board must be able to provide enough standby current to
support the standard Instantly Available (ACPI S3 sleep state) configuration. If the standby
current necessary to support multiple wake events from the PCI and/or USB buses exceeds power
supply capacity, the desktop board may lose register settings stored in memory.
For more information on standby current requirements for these desktop boards, refer to the TPS
by selecting the Technical Documentation link at:
http://developer.intel.com/design/motherbd/
Hardware Management
• Power connectors
• Fan connectors
• Resume on Ring
• Wake from USB
• Wake from PS/2 keyboard/mouse
• PME# wakeup support
Power Connectors
The desktop board has two power connectors. See Figure 12 on page 33 for the location of the
power connectors.
Fan Connectors
The desktop board has two chassis fan connectors (Intel Precision Cooling Technology) and one
processor fan connector. See Figure 12 on page 33 for the location of the fan connectors.
Fan Speed Control (Intel
®
Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the chassis fan speeds depending on the
system’s temperature. This feature reduces system fan noise by lowering the speed of the chassis
fans connected to the front and rear chassis fan connectors. The processor fan connector is not
controlled.
The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always
operating at full speed. This feature should be disabled if a self-controlled fan is attached to a
chassis fan connector.
Overall system noise reduction will vary based on system configuration and environment.
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