Intel DQ77KB Technical Product Specification - Page 45

Hardware Support

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Product Description 1.12.1.2 Wake-up Devices and Events Table 14 lists the devices or specific events that can wake the computer from specific states. Table 14. Wake-up Devices and Events These devices/events can wake up the computer... Power switch RTC alarm LAN USB WAKE# Serial port Note: S4 implies operating system support only. ...from this state S3, S4, S5 (Note) S3, S4, S5 (Note) S3, S4, S5 (Note) S3 S3, S4, S5 (Note) S3 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. 1.12.2 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 • PCI Express WAKE# signal support • Wake from serial port • Wake from S5 • +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. 45

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Product Description
45
1.12.1.2
Wake-up Devices and Events
Table 14 lists the devices or specific events that can wake the computer from specific
states.
Table 14.
Wake-up Devices and Events
These devices/events can wake up the computer…
…from this state
Power switch
S3, S4, S5
(
Note)
RTC alarm
S3, S4, S5
(Note)
LAN
S3, S4, S5
(Note)
USB
S3
WAKE#
S3, S4, S5
(Note)
Serial port
S3
Note:
S4 implies operating system support only.
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.
1.12.2
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
•
PCI Express WAKE# signal support
•
Wake from serial port
•
Wake from S5
•
+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.