Intel S875WP1 Product Guide - Page 24

Power Management, Software Support through ACPI - e supported processors

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Table 7 describes the LED states when the board is powered up and the 82547EI 10/100/1000 Gigabit Ethernet LAN subsystem is operating. Table 7. 10/100/1000 Gigabit Ethernet LAN Connector LEDs LED Color LED State Indicates Green (left LED) Off On (steady state) LAN link is not established. LAN link is established. On (brighter and pulsing) The computer is communicating with another computer on the LAN. Bi-color LED (right LED) Off Green 10 Mbit/sec data rate is selected. 100 Mbit/sec data rate is selected. Yellow 1000 Mbit/sec data rate is selected. Power Management Power management is implemented at several levels, including: • Software support through Advanced Configuration and Power Interface (ACPI) • Hardware support: - Suspend to RAM (Instantly Available PC technology) - Power connectors - Fan connectors - Resume on Ring - Wake from USB - Wake from PS/2 keyboard/mouse - PME# wakeup support Software Support through ACPI The Advance Configuration and Power Interface (ACPI)-aware operating system can place the system into a state where the hard drives spin down, the system fans stop, and all processing is halted. In this state, the power supply is still on and the processors still dissipate some power, so the power supply fan and processor fans are still running. Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state. 24 Intel Server Board S875WP1-E Product Guide

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24
Intel Server Board S875WP1-E Product Guide
Table 7 describes the LED states when the board is powered up and the 82547EI 10/100/1000
Gigabit Ethernet LAN subsystem is operating.
Table 7.
10/100/1000 Gigabit Ethernet LAN Connector LEDs
LED Color
LED State
Indicates
Off
LAN link is not established.
On (steady state)
LAN link is established.
Green (left
LED)
On (brighter and
pulsing)
The computer is communicating with another computer on the LAN.
Off
10 Mbit/sec data rate is selected.
Green
100 Mbit/sec data rate is selected.
Bi-color LED
(right LED)
Yellow
1000 Mbit/sec data rate is selected.
Power Management
Power management is implemented at several levels, including:
•
Software support through Advanced Configuration and Power Interface (ACPI)
•
Hardware support:
—
Suspend to RAM (Instantly Available PC technology)
—
Power connectors
—
Fan connectors
—
Resume on Ring
—
Wake from USB
—
Wake from PS/2 keyboard/mouse
—
PME# wakeup support
Software Support through ACPI
The Advance Configuration and Power Interface (ACPI)–aware operating system can place the
system into a state where the hard drives spin down, the system fans stop, and all processing is
halted.
In this state, the power supply is still on and the processors still dissipate some power, so
the power supply fan and processor fans are still running.
Under ACPI, the operating system directs all system and device power state transitions.
The
operating system puts devices in and out of low-power states based on user preferences and
knowledge of how devices are being used by applications.
Devices that are not being used can be
turned off.
The operating system uses information from applications and user settings to put the
system as a whole into a low-power state.