48 ASUS P2B User’s Manual
IV. BIOS SETUP
IV. BIOS
Power Management
Video Off Method (DPMS OFF)
This field defines the video off features. The following options are available: DPMS
OFF, DPMS Reduce ON, Blank Screen, V/H SYNC+Blank, DPMS Standby, and DPMS
Suspend. The DPMS (Display Power Management System) features allow the BIOS
to control the video display card if it supports the DPMS feature. Blank Screen only
blanks the screen (use this for monitors without power management or “green” fea-
tures. If set up in your system, your screen saver will not display with Blank Screen
selected). V/H SYNC+Blank blanks the screen and turns off vertical and horizontal
scanning.
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PM Timers
This section controls the time-out settings for the Power Management scheme. The
fields included in this section are “HDD Power Down”, which places the hard disk
into its lowest power consumption mode, and the Suspend mode which suspends the
CPU.
The system automatically “wakes up” from any power saving mode when there is
system activity such as when a key is pressed from the keyboard, or when there is
activity detected from the enabled IRQ channels.
HDD Power Down (Disable)
Shuts down any IDE hard disk drives in the system after a period of inactivity. This
time period is user-configurable to 1–15 Min or Disable. This feature does not affect
SCSI hard drives.
Suspend Mode (Disable)
Sets the period of time after which the suspend mode activates: 30 sec, 1 Min, 2 Min,
4 Min, 8 Min, 20 Min, 30 Min, 40 Min, 1 Hour, and Disable.
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Power Up Control
This section determines the ways the system can be controlled when it is started or
restarted, when modem activity is detected, or when power to the computer is inter-
rupted and reapplied. The Soft-Off mode refers to powering off the system through a
momentary button switch (ATX switch) or through the software as opposed to dis-
connecting the AC power by way of a rocker switch or other means.
PWR Button < 4 Secs (Soft Off)
When set to Soft Off, the ATX switch can be used as a normal system power-off button
when pressed for less than 4 seconds. Suspend allows the button to have a dual func-
tion where pressing less than 4 seconds will place the system in sleep mode. Regard-
less of the setting, holding the ATX switch for more than 4 seconds will power off the
system.
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