Intel Desktop Board DQ87PG Technical Product Specification
42
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.
1.12.2.1
Power Connector
ATX12V-compliant power supplies can turn off the system power through system
control. When an ACPI-enabled system receives the correct 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 10, page 50
The signal names of the main power connector
Table 24, page 55
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
•
Each fan header is wired to a fan tachometer input of the hardware monitoring and
fan control ASIC
•
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
•
The fan headers are controlled by Pulse Width Modulation
For information about
Refer to
The location of the fan headers
Figure 10, page 50
The location of the fan headers and sensors for thermal monitoring
Figure 6, page 31
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