Intel BOXD955XCSLKR Product Specification - Page 40

Power Connector, 14.2.2, Fan Connectors, 14.2.3, LAN Wake Capabilities, CAUTION

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Intel Desktop Board D955XCS Technical Product Specification NOTE The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an operating system that provides full ACPI support. 1.14.2.1 Power Connector When an ACPI-enabled system receives the appropriate command, the power supply removes all non-standby voltages. When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (on or off). The computer's response can be set using the Last Power State feature in the BIOS Setup program's Boot menu. For information about The location of the main power connector The signal names of the main power connector Refer to Figure 19, page 54 Table 25, page 58 1.14.2.2 Fan Connectors The function/operation of the fan connectors is as follows: • The fans are on when the board is in the S0 or S1 state. • The fans are off when the board is off or in the S3, S4, or S5 state. • Each fan connector is wired to a fan tachometer input of the hardware monitoring and fan control ASIC • All fan connectors support closed-loop fan control that can adjust the fan speed or switch the fan on or off as needed. • All fan connectors have a +12 V DC connection For information about The location of the fan connectors The location of the fan connectors and sensors for thermal monitoring The signal names of the fan connectors Refer to Figure 19, page 54 Figure 14, page 35 Section 2.7.1.1, page 52 1.14.2.3 LAN Wake Capabilities CAUTION For LAN wake capabilities, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing LAN wake capabilities can damage the power supply. LAN wake capabilities enable remote wake-up of the computer through a network. The LAN network adapter monitors network traffic at the Media Independent Interface. Upon detecting a Magic Packet* frame, the LAN subsystem asserts a wake-up signal that powers up the computer. Depending on the LAN implementation, the board supports LAN wake capabilities with ACPI in the following ways: • The PCI Express WAKE# signal • The PCI Conventional bus PME# signal for PCI 2.3 compliant LAN designs 40

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Intel Desktop Board D955XCS Technical Product Specification
40
±
NOTE
The use of Resume on Ring and Wake from USB technologies from an ACPI state requires an
operating system that provides full ACPI support.
1.14.2.1
Power Connector
When an ACPI-enabled system receives the appropriate command, the power supply removes all
non-standby voltages.
When resuming from an AC power failure, the computer returns to the power state it was in before
power was interrupted (on or off).
The computer’s response can be set using the Last Power State
feature in the BIOS Setup program’s Boot menu.
For information about
Refer to
The location of the main power connector
Figure 19, page 54
The signal names of the main power connector
Table 25, page 58
1.14.2.2
Fan Connectors
The function/operation of the fan connectors is as follows:
•
The fans are on when the board is in the S0 or S1 state.
•
The fans are off when the board is off or in the S3, S4, or S5 state.
•
Each fan connector is wired to a fan tachometer input of the hardware monitoring and fan
control ASIC
•
All fan connectors support closed-loop fan control that can adjust the fan speed or switch the
fan on or off as needed.
•
All fan connectors have a +12 V DC connection
For information about
Refer to
The location of the fan connectors
Figure 19, page 54
The location of the fan connectors and sensors for thermal monitoring
Figure 14, page 35
The signal names of the fan connectors
Section 2.7.1.1, page 52
1.14.2.3
LAN Wake Capabilities
CAUTION
For LAN wake capabilities, the +5 V standby line for the power supply must be capable of
providing adequate +5 V standby current.
Failure to provide adequate standby current when
implementing LAN wake capabilities can damage the power supply.
LAN wake capabilities enable remote wake-up of the computer through a network.
The LAN
network adapter monitors network traffic at the Media Independent Interface.
Upon detecting a
Magic Packet* frame, the LAN subsystem asserts a wake-up signal that powers up the computer.
Depending on the LAN implementation, the board supports LAN wake capabilities with ACPI in
the following ways:
•
The PCI Express WAKE# signal
•
The PCI Conventional bus PME# signal for PCI 2.3 compliant LAN designs