Fan Connector Function/Operation For Desktop Boards With A Hardware Monitoring Asic - Intel D845GRG Using Manual

LAN wake capabilities and Instantly Available PC technology require power from the +5 V
standby line. The sections discussing these features describe the incremental standby power
requirements for each.
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
ATX12V- and SFX12V-compliant power supplies can turn off the system power through software
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 ATX specification
1.13.2.2 Fan Connectors
Table 13 summarizes the function/operation of the fan connectors for boards with a hardware
18
monitoring ASIC
Table 13. Fan Connector Function/Operation for Desktop Boards with a Hardware
Monitoring ASIC
Connector
Processor fan
Front chassis fan
Rear chassis fan
18
Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on
your Intel Desktop Board.
.
Description
• +12 V DC connection for a processor fan or active fan heatsink.
• Fan is on in the S0 or S1 state.
Fan is off when the system is off or in the S3, S4, or S5 state.
• Wired to a fan tachometer input of the I/O controller.
• +12 V DC connection for a system or chassis fan.
• Fan is on in the S0 or S1 state.
Fan is off when the system is off or in the S3, S4, or S5 state.
• +12 V DC connection for a system or chassis fan.
• Fan is on in the S0 or S1 state.
Fan is off when the system is off or in the S3, S4, or S5 state.
• Wired to a fan tachometer input of the I/O controller.
Product Description
Refer to
Section 1.4, page 13
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