MSI MS-9803 User Manual page 49

ACPI Configuration
Suspend Mode
This item specifies the power saving modes for ACPI function. If your operating
system supports ACPI, you can choose to enter the Standby mode in S1 (POS)
or S3 (STR) fashion through the setting of this field. Options are:
[S1 (POS)]
[S3 (STR)]
USB Device Wakeup from S3/S4
This setting allows the activity of the USB device to wake up the system from
S3/S4 sleep state.
The S1 sleep mode is a low power state. In this state,
no system context is lost (CPU or chipset) and hard-
ware maintains all system context.
The S3 sleep mode is a lower power state where the
information of system configuration and open appli-
cations/files is saved to main memory that remains
powered while most other hardware components turn
off to save energy. The information stored in memory
will be used to restore the system when a "wake up"
event occurs.
BIOS Setup
3-11