Power Management; Software Support - Intel D850MVSE Specification

Intel Desktop Board D850MD/D850MV Technical Product Specification

1.14 Power Management

Power management is implemented at several levels, including:

Software support:

APM
ACPI
Hardware support:
Power connector
Fan connectors
LAN wake capabilities
Instantly Available technology
Wake from USB
Wake from PS/2 keyboard
PME# wake-up support
1.14.1 Software Support
The software support for power management includes:
APM
ACPI
If an ACPI-aware operating system is used, the BIOS can provide ACPI support. Otherwise, it
defaults to APM support.
1.14.1.1 APM
APM makes it possible for the computer to enter an energy-saving standby mode. The standby
mode can be initiated in the following ways:
Using the time-out period specified in the BIOS Setup program
From the operating system, such as the Standby menu item in Windows 98
In standby mode, the D850MD and D850MV boards can reduce power consumption by spinning
down hard drives and reducing power to, or turning off, VESA
Power management mode can be enabled or disabled in the BIOS Setup program.
While in standby mode, the system retains the ability to respond to external interrupts and service
requests, such as incoming faxes or network messages. Any keyboard or mouse activity brings the
system out of standby mode and immediately restores power to the monitor.
The BIOS enables APM by default, but the operating system must support an APM driver for the
power management features to work. For example, Windows 98 supports the power management
features upon detecting that APM is enabled in the BIOS.
For information about
Enabling or disabling power management in the BIOS Setup program
The D850MD and D850MV boards' compliance level with APM
38
†
DPMS-compliant monitors.
Refer to
Section 4.6, page 111
Section 1.5, page 19