Enabled
, you can press <Ctrl-P> at the BIOS POST screen to configure the Management
Engine. The default value is
Disabled
.
•
Unconfigure Management Engine
—This setting allows you to reset the Management
Engine to factory settings on the next boot. This option reverts to its default value after
the Management Engine is reset. The default value is
Disabled
.
•
USB-Based Configuration
—This setting enables or disables automatic configuration of
the Management Engine based on Management Engine configuration files that may be
present on USB devices plugged into the controller. The default value is
Disabled
.
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 best possible
configuration.
•
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 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 disabled automatically when booting LabVIEW Real-Time to reduce
application jitter.
•
Overcurrent Reporting—
This setting allows the BIOS to notify the operating system of
any USB ports that source too much current. The default value for this setting is
Disabled
.
•
Transfer Timeout
—This setting specifies the timeout value for Control, Bulk, and
Interrupt USB transfers. The default value for this setting is 20 seconds.
•
Device Reset Timeout
—This setting specifies the number of seconds the Power-On Self
Test waits for a USB mass storage device to start. The default is 20 seconds.
•
Device Power-Up Delay
—This setting specifies the maximum time a device takes before
it properly reports itself to the host controller. When set to
Auto
, a root port is granted
100 ms, and for a hub port, the delay value is taken from the hub descriptor. When set to
Manual
, you can set the delay manually. The default value for this setting is
Auto
.
•
Device Power-Up Delay in Seconds
—This setting specifies the number of seconds the
Power-On Self Test waits for a USB device or hub to power on. This setting is visible
only if
Device Power-Up Delay
is set to
Manual
. The default is 5 seconds.
In addition, the following option is available for each detected device if a USB mass storage
device is present:
•
Emulation Type
—This setting specifies how the BIOS presents the USB mass storage
device to the system. You can use this option to present a USB mass storage device as a
floppy, Zip, hard disk, or CD-ROM drive. The default is
Auto
, which allows the BIOS to
treat small USB flash disk drives as floppy drives and larger USB flash disk drives as
hard disk drives.
12
|
ni.com
|
NI PXIe-8840 Quad-Core User Manual