Intel D875PBZ Product Guide - Page 23

Power Connectors, Fan Connectors, Fan Speed Control (Intel® Precision Cooling Technology - fan control

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Page 23 highlights

Desktop Board Features The desktop board's standby power indicator, shown in Figure 2, is lit when there is standby power to the system. This includes the memory modules and PCI bus connectors, even when the computer appears to be off. If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber. CR7J1 OM15682 Figure 2. Location of the Standby Power Indicator 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/ Power Connectors The desktop board has two power connectors. See Figure 14 on page 46 for the location of the power connectors. Fan Connectors The desktop board has three chassis fan connectors and one processor fan connector. See Figure 14 on page 46 for the location of the fan connectors. Related Links: Go to page 46 for the location of the fan headers. 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 decreasing the speed of the chassis 23

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Desktop Board Features
23
The desktop board
’
s standby power indicator, shown in Figure 2, is lit when there is standby power
to the system.
This includes the memory modules and PCI bus connectors, even when the
computer appears to be off.
If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the
LED turning amber.
OM15682
CR7J1
Figure 2.
Location of the Standby Power Indicator
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:
Power Connectors
The desktop board has two power connectors.
See Figure 14 on page 46 for the location of the
power connectors.
Fan Connectors
The desktop board has three chassis fan connectors and one processor fan connector.
See Figure 14
on page 46 for the location of the fan connectors.
Related Links:
Go to page 46 for the location of the fan headers.
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 decreasing the speed of the chassis