Desktop Board Features
Hardware Monitoring and Fan Speed Control
The features of the hardware monitoring and fan speed control include:
•Monitoring of power supply voltages to detect levels above and below acceptable values
•Smart fan control provided by the legacy I/O controller, delivering acoustically- optimized thermal management. Fan speed controllers and sensors are integrated into the legacy I/O controller.
•A thermal sensor in the processor
•Thermally monitored
Chassis Intrusion
The 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 24, D for the location of the chassis intrusion header.
Power Management
Power management is implemented at several levels, including software support through the Advanced Configuration and Power Interface (ACPI) and the following hardware support:
•Power connectors
•Fan headers
•LAN wake capabilities
•Instantly Available PC technology (Suspend to RAM)
•Standby Power Indicator LED
•Wake from USB
•Power Management Event signal (PME#) wakeup support
•WAKE# signal
•Wake from Consumer IR
•Wake from serial port
Software Support
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.
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