Power Management Features; Acpi; Power Connectors; Fan Connectors - Intel D848PMB Product Manual

Intel Desktop Board D848PMB Product Guide

Power Management Features

Power management is implemented at several levels, including:
•
Advanced Configuration and Power Interface (ACPI)
•
Hardware support:
 Power connectors
 Fan connectors
 Fan Speed Control
 Suspend to RAM (Instantly Available PC technology)
 Resume on Ring
 Wake from USB
 Wake from PS/2 keyboard/mouse
 PME# wakeup support

ACPI

ACPI gives the operating system direct control over the power management and Plug & Play
functions of a computer. The use of ACPI with the desktop board requires an operating system that
provides full ACPI support.

Power Connectors

The desktop board has two power connectors. See Figure 13 on page 39 for the location of the
power connectors.

Fan Connectors

The desktop board has two chassis fan connectors (Intel Precision Cooling Technology) and one
processor fan connector. See Figure 13 on page 39 for the location of the fan connectors.
Fan Speed Control (Intel
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. The processor fan connector 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.
20
®
Precision Cooling Technology)