Chapter 2
Installation and Configuration
2-8
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system will immediately power off when the power button is pressed,
overriding any OS-specific power button policy. When set to
Disabled
,
pressing the power button has no effect. The
Disabled
option should
only be used in conjunction with the PXI Express chassis’ inhibit mode
switch.
•
Restore After Power Loss
—This setting specifies the power state that
the controller should return to after AC power is lost. Valid values are
Stay Off
and
Turn On
. The default is
Stay Off
. When set to
Stay Off
,
the controller will return to the soft off power state after AC power is
restored. When set to
Turn On
, the controller will power on when AC
power is restored.
•
PXI Express
Backplane WAKE#
—This setting enables or disables a
PXI Express peripheral module’s ability to wake a powered-off
system. The default value is
Disabled
.
•
SMBus ALERT#
—This setting enables or disables a System
Management device’s ability to wake a powered off system by
asserting the ALERT# signal. The default value is
Enabled
.
IDE Configuration Submenu
Use this submenu to display hard disk drive (HDD) interfaces detected.
•
PATA Master
—This item displays the master PATA drive detected.
USB Configuration Submenu
Use this submenu to apply alternate configurations to the USB ports.
Normally, you do not need to modify these settings, as the factory default
settings provide the most compatible and optimal configuration possible.
•
USB Devices
—This item lists the total number of devices detected in
the system, categorized by device type.
•
Legacy USB Support
—This setting specifies whether or not legacy
USB support is enabled. Legacy USB support refers to the ability to
use a USB keyboard and mouse during system boot or in a legacy
operating system such as DOS. The default value is
Enabled
.
Note
Certain real-time applications may require you to disable this setting to reduce loop
time jitter. When the controller is configured to boot LabVIEW RT, legacy USB support is
automatically disabled.
•
EHCI Hand-Off
—This setting is for an OS without EHCI hand-off
support.
