Intel D845EPI Intel Desktop Board D845EPI Technical Product Specification - Page 33

Power Connector, 13.2.2, Fan Connectors

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Product Description 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-, 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 The BIOS Setup program's Boot menu The ATX, SFX, and TFX12V specifications Refer to Figure 5, page 46 Table 22, page 48 Table 59, page 92 Section 1.5, page 17 1.13.2.2 Fan Connectors Table 10 summarizes the function/operation of the fan connectors. Table 10. Fan Connector Function/Operation Connector Description Processor fan Front chassis fan • +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. Rear chassis fan • +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. 33

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Product Description
33
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-, 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
Refer to
The location of the power connector
Figure 5, page 46
The signal names of the power connector
Table 22, page 48
The BIOS Setup program
’
s Boot menu
Table 59, page 92
The ATX, SFX, and TFX12V specifications
Section 1.5, page 17
1.13.2.2
Fan Connectors
Table 10 summarizes the function/operation of the fan connectors.
Table 10.
Fan Connector Function/Operation
Connector
Description
Processor fan
•
+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.
Front chassis fan
•
+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.
Rear chassis fan
•
+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.