System Overview
Power Saving And Ergonometry
Chapter 1
23
Power Saving And Ergonometry
Depending on the operating system, the following power-management types are
available:
• No sleeping state: Windows NT 4.0 (Full On and Off).
• ACPI: Windows 2000 or XP (Full On, Standby, Hibernate, Off).
Power Saving And Ergonometry For APM Systems
Power Saving Modes And Resume Events For ACPI Systems
Windows
2000/XP
Windows NT 4.0
A
P
M
Full On
Not Supported
by Windows 2000
Supported
Suspend Not Supported by
Windows NT 4.0
Off Supported
A
C
P
I
Standby (S1
or S3)
Supported
(implemented as
S3, Suspend to
RAM)
APM
only
Operating
System
Hibernate
(S4)
Supported
Off (S5) Supported
Full On
Suspend
a
a. Not supported by Windows NT 4.0.
Off
Processor Normal speed Halted Halted
Display On Blanked, <5W (typ) Blanked, <5W (typ)
Hard disk drive Normal speed Halted Halted
Power
consumption
Supports up to
320W
<40W (230V, 50Hz)
<21W (115V, 60Hz)
(plugged in but turned
off) <5W (average)
Resume events Keyboard, network
(RWU), modem, USB
Power button or RPO
Resume delay A few seconds Boot delay
Full On
(S0)
Suspend (S1) Suspend to
RAM (S3)
Suspend to
Disk (S4)
Off (S5)
Processor Normal
speed
Halted Off Off Off
Display On Blanked Off Off Off
