Intel Desktop Board D975XBX2 Product Guide
Chassis Intrusion
The desktop board supports a chassis security feature that detects if the chassis cover has been removed. The security feature uses a mechanical switch on the chassis that can be connected to the chassis intrusion header on the desktop board. See Figure 29 on page 51 for the location of the chassis intrusion header.
Power Management Features
Power management is implemented at several levels, including:
•Advanced Configuration and Power Interface (ACPI)
•Hardware support:
―Fan connectors
―Fan Speed Control
―Suspend to RAM (Instantly Available PC technology)
―Resume on Ring
―Wake from USB
―Wake from PS/2 keyboard/mouse
―PME# wakeup support
―Onboard power button
ACPI
ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with the desktop board requires an operating system that provides full ACPI support.
Fan Connectors
Desktop Board D975XBX2 has four chassis fan connectors (three
Fan Speed Control (Intel® Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the processor fan speed based on the processor temperature and adjusts the chassis fan speeds depending on the system temperature. System fan noise may be reduced by operating controlled chassis and processor fans at the minimum necessary speeds.
The processor and chassis fan speed control features can be disabled independently through the desktop board BIOS. Disabling the processor fan speed control will result in the fan operating at full speed if it is not a
The overall system noise reduction will vary based on system configuration and environment.
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