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P4D/P4D-N Motherboard
User’s Manual
6•2
Power Button
Function: Turns the system On and Off.
Use: This button is configured by the CMOS Setup Utility
by the “Soft-Off Mode by PWR-BTTN” line in the Power
Management section. Depending on the setting, the power
button will function in one of two modes, instant on/off
or instant on/4 second delay off. In the delay mode, when
you push the power button for less than 4 seconds when
the system is turned, the system goes into the Suspend
power conservation mode. In this mode, you have to push
the button for more than 4 seconds to turn the system
power off.
Reset Switch
Function: Restarts the system to cold boot.
Use: Press the button to restart the system. This forces a
restart under all conditions. Don’t use the Reset button if
you can shut the system down from within the Operating
System.
Note On Reset & Rebooting:
You should always restart or shut down the system by
using the OS command for this. This procedure allows
the OS to shut down properly, minimizing the possibility
of hard disk drive problems or data loss. If the system
crashes or “hangs”, you may have to restart the system
at the hardware level. There are two hardware reboot
options, a keyboard command and the Reset button.
You can effect a “warm” reboot with a key command if
the OS supports it. For example, all versions of Microsoft
Windows support restarting the computer with the Ctrl-
Alt-Del (Delete) command. You can try this command
first if it is supported. Otherwise, you will need to use
the Reset button.
Suspend Button
Function: Toggles system in and out of Suspend mode.
Use: Press the button to cause the system to enter or
resume from Suspend mode.
Note: The front panel feature connector supports a sys-
tem Suspend button (the ACPI connector) but not all sys-
tem housings have this button. The same function can
be performed at the Operating System level if the OS sup-
ports the feature.