Fan Headers; Lan Wake Capabilities - Intel BLKDG31GL Technical Product Specification

1.12.2.2

Fan Headers

The function/operation of the fan headers is as follows:
• The fans are on when the board is in the S0 state.
• The fans are off when the board is off or in the S3, S4, or S5 state.
• The processor fan header is wired to a fan tachometer input and the rear fan
header uses the tachometer input of the hardware monitoring and fan control
device. All fan headers support closed-loop fan control that can adjust the fan
speed or switch the fan on or off as needed.
• All fan headers have a +12 V DC connection.
For information about
The locations of the fan headers and thermal sensors
The signal names of the processor fan header
The signal names of the chassis fan header
1.12.2.3

LAN Wake Capabilities

CAUTION
For LAN wake capabilities, the +5 V standby line from 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 subsystem PCI bus 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 bus PME# signal for PCI 2.3 compliant LAN designs
⎯ By Ping
⎯ Magic Packet
• The onboard LAN subsystem
Product Description
Refer to
Figure 6, page 28
Table 16, page 45
Table 15, page 45
33