IEI Integration ROCKY-3786 v4.0 - Manual (Page 114)

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S1 (POS) (Default) System appears off. The CPU is stopped; RAM is
refreshed; the system is running in a low power mode.
S3 (STR) System appears off. The CPU has no power; RAM is in
slow refresh; the power supply is in a reduced power
mode.
Power Management [Min Saving]
Use the Power Management option to specify the power management selection
methods.
User Defined User must define when the system goes into a
sleep state or a suspend state.
Min. Saving (Default) The longest period of time that can be specified
before the system enters either the Doze mode or
the suspend state. The longest time for either of
these is one hour.
Max. Saving The shortest period of time that can be specified
before the system enters either the Doze mode or
the suspend state. The shortest time for either of
these is one minute.
Video Off Method [DPMS]
Use the Video Off Method option to specify what display components are powered off
when the system enters a sleep or suspend state Method.
Blank Screen The display screen goes blank when the video
is disabled.
V/H SYNC + Blank The display screen goes blank and the
V-SYNC and H-SYNC signals from VGA cards