Chapter 1: Introduction
1-11
notify the user of certain system events. For example, you can also congure
Supero Doctor to provide you with warnings when the system temperature, CPU
temperatures, voltages and fan speeds go beyond a pre-dened range.
1-5 ACPI Features
ACPI stands for Advanced Conguration and Power Interface. The ACPI specica-
tion denes a 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 conguration control. ACPI leverages the Plug
and Play BIOS data structures while providing a processor architecture-independent
implementation that is compatible with both Windows 2003 and Windows 2008Op-
erating 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.
1-6 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 X8DTU/X8DTU-F can accommodate 20-pin ATX power supplies. Although
most power supplies generally meet the specications required by the CPU, some
are inadequate. In addition, two 12V 8-pin power connections are also required to
ensure adequate power supply to the system. Also your power supply must supply
1.5A for the Ethernet ports.
Warnings: 1. To prevent damage to the power supply or motherboard, please use a
power supply that contains a 20-pin and two 8-pin power connectors. Be sure to con-
nect these connectors to the 20-pin (JPW1) and the two 8-pin (JPW2,JPW3) power
connectors on the motherboard. Failure in doing so will void the manufacturer warranty
on your power supply and motherboard. 2. To provide adequate power to the add-on
cards installed on the motherboard, please connect the UIOP PWR connector to the
power supply.
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