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Chapter 2
Installation and Configuration
Power/Wake Configuration Submenu
Use this submenu to apply alternate configurations to the power and wake features of the chipset
and controller. Normally, you do not need to modify these settings, as the factory default settings
provide the most compatible and optimal configuration possible.
•
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.
•
Power Button Off Behavior
—This setting specifies how the PXI Express power button
should behave. Valid options are
Normal
and
Disable
. The default value is
Normal
. When
set to
Normal
, the power button will be controlled by the OS. When set to
Disable
, pressing
the power button has no effect. The
Disable
option should only be used in conjunction with
the PXI Express chassis’ inhibit mode switch.
•
PXIe 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
Disabled
.
PCI Configuration Submenu
Use this submenu to apply alternate settings to PCI devices. Normally, you do not need to
modify these settings, as the factory default settings provide the most compatible and optimal
configuration possible.
•
64-bit Memory Mapped IO
—This setting enables or disables support for
memory-mapped IO above the 4 GB boundary. It can be useful when using a 64-bit OS and
a large number of PCI devices. The default value is
Disabled
.
•
PCIe Max Payload Size
—This setting determines the maximum payload size of PCIe
devices. Valid options are
Auto
and
128 Bytes
. The default value is
Auto
, which allows the
BIOS to choose an optimal value based on which devices are present.
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
.
This option is automatically disabled when booting LabVIEW Real-Time in order to reduce
application jitter.
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