22 Chapter 1
On • Working (G0/S0): Individual devices such as the CPU and hard
disk may be power managed in this state.
• Suspend to RAM (S3): CPU set power down, VGA Suspend,
PCMCIA Suspend, Audio Power Down, Hard Disk Power Down,
CD-ROM Power Down, and Super I/O Low Power mode.
• Save to Disk (S4): Also called Hibernation Mode. System saves
all system states and data onto the disc prior to system shutdown.
System Power Management
ACPI mode Power Management
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