Power Connector; Fan Connectors; Lan Wake Capabilities - Intel DESKTOP BOARD D955XBK Manual

Intel Desktop Board D955XBK 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
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
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 2.2 compliant LAN designs
40
Refer to
Figure 19, page 56
Table 26, page 60
Refer to
Figure 19, page 56
Figure 14, page 35
Section 2.7.1.1, page 54