Intel DH61AG Technical Product Specification - Page 42

Power Input, 13.2.2, Fan Headers

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Intel Desktop Board DH61AG Technical Product Specification 1.13.2.1 Power Input 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 internal power connector The signal names of the internal power connector Refer to Figure 13, page 49 Table 35, page 60 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 as needed • All fan headers have a +12 V DC connection • Fan headers can support both 4-wire as well as 3-wire fans. 4-wire fans are controlled by Pulse Width Modulation; 3-wire fans are voltage controlled. For information about The location of the fan headers The location of the fan headers and sensors for thermal monitoring Refer to Figure 13, page 49 Figure 9, page 38 42

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Intel Desktop Board DH61AG Technical Product Specification
42
1.13.2.1
Power Input
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 internal power connector
Figure 13, page 49
The signal names of the internal power connector
Table 35, page 60
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 as
needed
•
All fan headers have a +12 V DC connection
•
Fan headers can support both 4-wire as well as 3-wire fans.
4-wire fans are
controlled by Pulse Width Modulation; 3-wire fans are voltage controlled.
For information about
Refer to
The location of the fan headers
Figure 13, page 49
The location of the fan headers and sensors for thermal monitoring
Figure 9, page 38