Intel D845PT Intel Desktop Board D845PT/D845BG Product Guide - Page 20

Hardware, Power Connectors, Fan Connectors, Resume on Ring, Instantly Available PC Technology, CAUTION

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Intel Desktop Boards D845PT and D845BG Product Guide Hardware Power Connectors The D845PT and D845BG boards have two power connectors. See Figure 22 on page 70 for the location of the power connectors. Fan Connectors The D845PT and D845BG boards have one processor fan connector and two standard fan connectors. See Figure 22 on page 70 for the location of the fan connectors. Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from the ACPI S1 state • Requires only one call to access the computer • Detects incoming call similarly for external and internal modems • Requires modem interrupt be unmasked for correct operation Instantly Available PC Technology CAUTION For Instantly Available PC technology, the 5 V standby line for the power supply must be capable of delivering adequate +5 V standby current. Failure to provide adequate standby current when using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality. Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. When signaled by a wake-up device or event, the system quickly returns to its last known awake state. The board's standby power indicator, shown in Figure 3, is lit when there is standby power to the system. This includes the memory modules and PCI bus connectors, even when the computer appears to be off. If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber. 20

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Intel Desktop Boards D845PT and D845BG Product Guide
20
Hardware
Power Connectors
The D845PT and D845BG boards have two power connectors.
See Figure 22 on page 70 for the
location of the power connectors.
Fan Connectors
The D845PT and D845BG boards have one processor fan connector and two standard fan
connectors.
See Figure 22 on page 70 for the location of the fan connectors.
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
•
Resumes operation from the ACPI S1 state
•
Requires only one call to access the computer
•
Detects incoming call similarly for external and internal modems
•
Requires modem interrupt be unmasked for correct operation
Instantly Available PC Technology
CAUTION
For Instantly Available PC technology, the 5 V standby line for the power supply must be capable
of delivering adequate +5 V standby current.
Failure to provide adequate standby current when
using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality.
Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-RAM)
sleep state.
While in the S3 sleep state, the computer will appear to be off.
When signaled by a
wake-up device or event, the system quickly returns to its last known awake state.
The board
’
s standby power indicator, shown in Figure 3, is lit when there is standby power to the
system.
This includes the memory modules and PCI bus connectors, even when the computer
appears to be off.
If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the
LED turning amber.