Supermicro X7DWA-N User Manual download pdf (Page 17)

Chapter 1: Introduction

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low on virtual memory and there is insufﬁ cient hard drive space for saving the

data, you can be alerted of the potential problem. You can also conﬁ gure Supero

Doctor to provide you with warnings when the system temperature goes beyond

a pre-deﬁ ned range.

1-5 ACPI Features

ACPI stands for Advanced Conﬁ guration and Power Interface. The ACPI speciﬁ -

cation deﬁ nes a ﬂ exible and abstract hardware interface that provides a standard

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. This also includes consumer devices connected to

the PC such as VCRs, TVs, telephones and stereos.

In addition to enabling operating system-directed power management, ACPI pro-

vides a generic system event mechanism for Plug and Play and an operating- sys-

tem-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 Windows 2000, Windows XP, Windows

2003, Windows 2003 Servers and Windows Vista.

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 CPU is in the S1 mode,

the Power LED blinks every second. When in the S3 mode, the Power LED will

blink every 5-second. 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 SoftOff state. The monitor will be sus-

pended and the hard drive will spin down. Pressing the power button again will

cause the whole system to wake-up. During the SoftOff state, the ATX power

supply provides 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

power button for 4 seconds. This option can be set in the Advanced Setup section

of the BIOS Setup routine.

External Modem Ring-On

Wake-up events can be triggered by a device such as the external modem ringing

when the system is in the SoftOff state. Note that external modem ring-on can

only be used with an ATX 2.01 (or above) compliant power supply.

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Supermicro X7DWA-N User Manual Page 17