Power Connector; Fan Headers - Intel DQ77CP Specification

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.
1.13.2.1

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
The location of the main power connector
The signal names of the main power connector
1.13.2.2

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
The location of the fan headers
The location of the fan headers and sensors for thermal monitoring
Product Description
Refer to
Figure 11, page 47
Table 24, page 53
Refer to
Figure 11, page 47
Figure 6, page 30
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