Chapter 1: Introduction
1-11
notify the user of certain system events. For example, you can also confi gure
Supero Doctor to provide you with warnings when the system temperature, CPU
temperatures, voltages and fan speeds go beyond a pre-defi ned range.
1-6 ACPI Features
ACPI stands for Advanced Confi guration and Power Interface. The ACPI specifi ca-
tion defi nes a fl exible and abstract hardware interface that provides a standard
way to integrate power management features throughout a PC system, including
its hardware, operating system and application software. This enables the system
to automatically turn on and off peripherals such as CD-ROMs, network cards, hard
disk drives and printers.
In addition to enabling operating system-directed power management, ACPI
provides a generic system event mechanism for Plug and Play and an operating
system-independent interface for confi guration control. ACPI leverages the Plug
and Play BIOS data structures while providing a processor architecture-independent
implementation that is compatible with both Windows 2000 and Windows 2003
Operating Systems.
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 may function as a system
suspend button, allowing the system to enter a SoftOff state. The monitor will be
suspended and the hard drive will spin down. Pressing the power button again to
"wake-up" the whole system. During the SoftOff state, the ATX power supply pro-
vides power to keep the required circuitry in the system "alive." In case the system
malfunctions and you want to turn off the power, just press and hold the power
button for 4 seconds. This option can be set in the BIOS Setup utility.
1-7 Power Supply
As with all computer products, a stable power source is necessary for proper and
reliable operation. It is even more important for processors that have high CPU
clock rates.
The X8DAL-3/X8DAL-i can accommodate 24-pin ATX power supplies. Although
most power supplies generally meet the specifi cations required by the CPU, some
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