Intel D845PEBT2 Product Guide - Page 21

Power Connectors, Fan Connectors, Fan Speed Control (Intel® Precision Cooling Technology)

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Page 21 highlights

Desktop Board Features Power Connectors Desktop Board D845PEBT2 has two power connectors. See Figure 13 on page 36 for the location of the power connectors. Fan Connectors Desktop Board D845PEBT2 has two chassis fan connectors (Intel Precision Cooling Technology) and one processor fan connector. See Figure 13 on page 36 for the location of the fan connectors. Fan Speed Control (Intel® Precision Cooling Technology) Intel Precision Cooling Technology automatically adjusts the chassis fan speeds depending on the system's temperature. This feature reduces system fan noise by lowering the speed of the chassis fans connected to the front and rear chassis fan connectors (J8H3 and J1B1). The processor fan connector (J1F1) is not controlled. The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always operating at full speed. This feature should be disabled if a self-controlled fan is attached to a chassis fan connector. Overall system noise reduction will vary based on system configuration and environment. Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from either ACPI S1 or ACPI S3 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 Wake from USB USB bus activity wakes the computer from an ACPI S1 or S3 state. ✏ NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB. Wake from PS/2 Keyboard/Mouse PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state. PME# Wakeup Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or S5 state. 21

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Desktop Board Features
21
Power Connectors
Desktop Board D845PEBT2 has two power connectors.
See Figure 13 on page 36 for the location
of the power connectors.
Fan Connectors
Desktop Board D845PEBT2 has two chassis fan connectors (Intel Precision Cooling Technology)
and one processor fan connector.
See Figure 13 on page 36 for the location of the fan connectors.
Fan Speed Control (Intel
®
Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the chassis fan speeds depending on the
system
’
s temperature.
This feature reduces system fan noise by lowering the speed of the chassis
fans connected to the front and rear chassis fan connectors (J8H3 and J1B1).
The processor fan
connector (J1F1) is not controlled.
The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always
operating at full speed.
This feature should be disabled if a self-controlled fan is attached to a
chassis fan connector.
Overall system noise reduction will vary based on system configuration and environment.
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
•
Resumes operation from either ACPI S1 or ACPI S3 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
Wake from USB
USB bus activity wakes the computer from an ACPI S1 or S3 state.
✏
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
Wake from PS/2 Keyboard/Mouse
PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state.
PME# Wakeup Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or
S5 state.