Aaeon SBC-558, Manual

Page: 76 / 119

Chapter 3 Award BIOS Setup 67
PM Control by APM
If Advanced Power Management (APM) is installed on your
system, selecting Yes gives better power savings.
MODEM Use IRQ
Name the interrupt request (IRQ) line assigned to the modem (if
any) on your system. Activity of the selected IRQ always awakens
the system.
Video Off Method
Determines the manner in which the monitor is blanked.
V/H SYNC+Blank System turns off vertical and horizontal
synchronization ports and writes blanks to
the video buffer.
DPMS Support Select this option if your monitor supports
the Display Power Management Signaling
(DPMS) standard of the Video Electronics
Standards Association (VESA). Use the
software supplied for your video subsystem
to select video power management values.
Blank Screen System only writes blanks to the video
buffer.
HDD Power Down
After the selected period of drive inactivity, any system IDE
devices compatible with the ATA-2 specification or later power
manage themselves, putting themselves into an idle state after the
specified timeout and then waking themselves up when accessed.
Doze Mode
After the selected period of system inactivity, the CPU clock
throttles to a small percentage of its duty cycle — between 10
percent and 25 percent for most chipsets. All other devices still
operate at full speed.