Fan Connector Function/Operation - Intel D845PEMY Specification

Intel Desktop Board D845PEMY 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.
1.12.2.1 Power Connector
ATX12V-, SFX12V-, and TFX12V-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 power connector
The signal names of the power connector
1.12.2.2 Fan Connectors
Table 9 summarizes the function/operation of the fan connectors.
Table 9.

Fan Connector Function/Operation

Connector
Processor fan
Front chassis fan
Rear chassis fan
28
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.
• Option to wire the fan tachometer input to the I/O controller or the Hardware
Monitoring and Fan Control ASIC.
• +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.
• Option to wire the fan tachometer input to the Hardware Monitoring and Fan
Control ASIC.
• +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.
• Option to wire the fan tachometer input to the I/O controller or the Hardware
Monitoring and Fan Control ASIC.
Refer to
Figure 5, page 40
Table 20, page 42