Intel S975XBX2 Product Specification - Page 42

Power Connector, 13.2.2, Fan Headers

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Page 42 highlights

Intel Workstation Board S975XBX2 Technical Product Specification Resume on Ring enables telephony devices to access the computer when it is in a power-managed state. The method used depends on the type of telephony device (external or internal). 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. 1.13.2.1 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 Refer to Figure 16, page 56 Table 24, 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 or S1 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 For information about The location of the fan headers The location of the fan headers and sensors for thermal monitoring The signal names of the fan headers Refer to Figure 16, page 56 Figure 12, page 37 Section 2.7.1.1, page 55 42

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Intel Workstation Board S975XBX2 Technical Product Specification
42
Resume on Ring enables telephony devices to access the computer when it is in a
power-managed state.
The method used depends on the type of telephony device
(external or internal).
±
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.
1.13.2.1
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
Refer to
The location of the main power connector
Figure 16, page 56
The signal names of the main power connector
Table 24, 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 or S1 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
For information about
Refer to
The location of the fan headers
Figure 16, page 56
The location of the fan headers and sensors for thermal monitoring
Figure 12, page 37
The signal names of the fan headers
Section 2.7.1.1, page 55