Intel DESKTOP BOARD D925XCV - Manual (Page 40)

Intel Desktop Board D925XCV/D925XBC Technical Product Specification
1.13.3 Fan 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
1.13.4 Chassis 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
1.14.1 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 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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