Intel Desktop Board DP55WB Technical Product Specification

1.11.1.2 Wake-up Devices and Events

Table 8 lists the devices or specific events that can wake the computer from specific

states.

Table 8. Wake-up Devices and Events

These devices/events can wake up the computer… …from this state

Power switch S1, S3, S4, S5

(

Note)

RTC alarm S1, S3, S4, S5

(Note)

LAN S1, S3, S4, S5

(Note)

USB S1, S3

PME# signal S1, S3, S4, S5

(Note)

WAKE# S1, S3, S4, S5

(Note)

Note: S4 implies operating system support only. Wake from S4 and S5 is recommended by Microsoft.

NOTE

The use of these wake-up events from an ACPI state requires an operating system

that provides full ACPI support. In addition, software, drivers, and peripherals must

fully support ACPI wake events.

1.11.2 Hardware Support

CAUTION

Ensure that the power supply provides adequate +5 V standby current if LAN wake

capabilities and Instantly Available PC technology features are used. Failure to do so

can damage the power supply. The total amount of standby current required depends

on the wake devices supported and manufacturing options.

The board provides several power management hardware features, including:

• Power connector

• Fan headers

• LAN wake capabilities

• Instantly Available PC technology

• Wake from USB

• PME# signal wake-up support

• WAKE# signal wake-up support

• +5 V Standby Power Indicator LED

LAN wake capabilities and Instantly Available PC technology require power from the

+5 V standby line.

NOTE

The use of Wake from USB from an ACPI state requires an operating system that

provides full ACPI support.