Aaeon SBC-551 Manual page 65

PM Timers
The following four modes are Green PC power saving functions
which are only user configureable when "User Defined Power
Management" has been selected. See above for the available
Power Management selections.
HDD Off After
When enabled and after the selected time of system inactivity, the
hard disk drive will be powered down while all other devices will
remain active.
Doze Mode
This sets the period of system inactivity after which the system
goes into Doze mode, the most limited power saving state. The
settings range from 20 seconds to 40 minutes and can be set
manually when power management is in User Define mode. The
default setting is Disabled. When the system goes into power
saving mode, power management will skip to the next mode in the
sequence if this is disabled.
Standby Mode
This sets the period of system inactivity after which the system
goes into Standby mode, the intermediate power saving state. The
settings range from 20 seconds to 40 minutes and can be set
manually when power management is in User Define mode. The
default setting is Disabled. When the system goes into power
saving mode, power management will skip to the next mode in the
sequence if this is disabled.
Suspend Mode
This sets the period of system inactivity after which the system
goes into Suspend mode, the maximum power saving state. The
settings range from 20 seconds to 40 minutes and can be set
manually when power management is in User Define mode. The
default setting is Disabled. When the system goes into power
saving mode, power management will skip to the next mode in the
sequence if this is disabled.
Chapter 3 Award BIOS Setup 57