Acpi Features - Supermicro X6DVL-iG2 User Manual

CPU Overheat/Fan Fail LED and Control
This feature is available when the user enables the CPU overheat/Fan Fail
warning function in the BIOS. This allows the user to define an overheat
temperature. When this temperature is exceeded, the warning LED is trig-
gered and the fans will speed up.
Thermal Management 2 (TM2)
When TM2 is enabled in the BIOS and the CPU temperature reaches a pre-
defined threshold,
process speed by lowering the bus-to-core ratio of the CPU clock,
decrease the voltage input to the CPU VID. This combination of reduced
CPU bus frequency and CPU VID can effectively decrease CPU power con-
sumption and prevents CPU overheat and thus, greatly increases the sys-
tem stability. (*This function is available for the CPUs that support TM2.)
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ACPI Features

ACPI stands for Advanced Configuration and Power Interface.
specification defines a flexible and abstract hardware interface that pro-
vides a standard way to integrate power management features throughout
a PC system, including its hardware, operating system and application soft-
ware. This enables the system to automatically turn on and off peripherals
such as CD-ROMs, network cards, hard disk drives and printers. This also
includes consumer devices connected to the PC such as VCRs, TVs, tele-
phones and stereos.
In addition to enabling operating system-directed power management, ACPI
provides a generic system event mechanism for Plug and Play and an oper-
ating system-independent interface for configuration control.
ages the Plug and Play BIOS data structures while providing a processor
architecture-independent implementation that is compatible with Windows
2000, Windows XP, and Windows Server 2003.
Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start
blinking to indicate that the CPU is in suspend mode. When the user presses
any key, the CPU will wake-up and the LED will automatically stop blinking
and remain on.
Main Switch Override Mechanism
When an ATX power supply is used, the power button can function as a
system suspend button to make the system enter a SoftOff state.
monitor will be suspended and the hard drive will spin down.
a thermal monitoring mechanism will slow down the
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Chapter 1: Introduction
The ACPI
ACPI lever-
Depressing
and
The