Intel D925XCV, D925XBC Power Management, Fan Monitoring, Chassis Intrusion and Detection, Acpi

Intel Desktop Board D925XCV/D925XBC Technical Product Specification

1.13.3Fan Monitoring

Fan monitoring can be implemented using Intel Desktop Utilities, LANDesk* software, or third- party software. The level of monitoring and control is dependent on the hardware monitoring ASIC used with the Desktop Board.

For information about	Refer to
The functions of the fan connectors	Section 1.14.2.2, page 44

1.13.4Chassis Intrusion and Detection

The Desktop Boards D925XCV and D925XBC support a chassis security feature that detects if the chassis cover is removed. The security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion connector. When the chassis cover is removed, the mechanical switch is in the closed position.

1.14 Power Management

Power management is implemented at several levels, including:

•Software support through Advanced Configuration and Power Interface (ACPI)

•Hardware support:

Power connector

Fan connectors

LAN wake capabilities

Instantly Available PC technology

Resume on Ring

Wake from USB

Wake from PS/2 devices

Power Management Event signal (PME#) wake-up support

PCI Express WAKE# signal support

1.14.1ACPI

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 Boards D925XCV and D925XBC requires an operating system that provides full ACPI support. ACPI features include:

•Plug and Play (including bus and device enumeration)

•Power management control of individual devices, add-in boards (some add-in boards may require an ACPI-aware driver), video displays, and hard disk drives

•Methods for achieving less than 15-watt system operation in the power-on/standby sleeping state

•A Soft-off feature that enables the operating system to power-off the computer

•Support for multiple wake-up events (see Table 10 on page 43)

•Support for a front panel power and sleep mode switch

Table 8 lists the system states based on how long the power switch is pressed, depending on how ACPI is configured with an ACPI-aware operating system.

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