Intel Desktop Board DH61SA Product Guide
20
Fan Speed Control and Hardware Monitoring
The features of the hardware monitoring and fan speed control include:
• Thermal sensors in the processor and the Intel PCH, as well as near the processor
voltage regulators and system memory
• Monitoring of system voltages to detect levels above or below acceptable values
• Thermally monitored closed-loop fan control for all three fans that can adjust fan
speed as needed
• Support for 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.
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)
• +5 V standby power indicator LED
• Wake from USB
• PCI Power Management Event signal (PME#) wakeup support
• PCI Express WAKE# signal support
• Wake from serial devices
• Wake from PS/2 devices
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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