Intel D875PBZ Product Guide - Page 22

Power Management Features, ACPI, APM, Suspend to RAM (Instantly Available PC Technology)

Get Intel D875PBZ - Desktop Board Motherboard PDF manuals and user guides View all Intel D875PBZ manuals
Add to My Manuals
Save this manual to your list of manuals

Page 22 highlights

Intel Desktop Board D875PBZ Product Guide Power Management Features Power management is implemented at several levels, including: • Software support through Advanced Configuration and Power Interface (ACPI) and Advanced Power Management (APM) • Hardware support:  Suspend to RAM (Instantly Available PC technology)  Power connectors  Fan connectors  Chassis intrusion  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. 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: • Time-out period specified in the BIOS Setup program • From the operating system, such as the standby menu item in Windows 98SE In standby mode, the board may reduce power consumption by spinning down hard drives, and reducing power to or turning off of VESA* DPMS-compliant monitors. APM 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. Suspend to RAM (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. 22

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
Intel Desktop Board D875PBZ Product Guide
22
Power Management Features
Power management is implemented at several levels, including:
•
Software support through Advanced Configuration and Power Interface (ACPI) and Advanced
Power Management (APM)
•
Hardware support:
Suspend to RAM (Instantly Available PC technology)
Power connectors
Fan connectors
Chassis intrusion
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.
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:
•
Time-out period specified in the BIOS Setup program
•
From the operating system, such as the standby menu item in Windows 98SE
In standby mode, the board may reduce power consumption by spinning down hard drives, and
reducing power to or turning off of VESA* DPMS-compliant monitors.
APM 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.
Suspend to RAM (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.