Dell Precision 7720 Owner's Manual page 41

Option Description
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SMART Reporting This field controls whether hard drive errors for integrated drives are reported during system startup. This
technology is part of the SMART (Self Monitoring Analysis and Reporting Technology) specification. This option is
disabled by default.
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USB Configuration
This is an optional feature.
This field configures the integrated USB controller. If Boot Support is enabled, the system is allowed to boot any
type of USB Mass Storage Devices (HDD, memory key, floppy).
If USB port is enabled, device attached to this port is enabled and available for OS.
If USB port is disabled, the OS cannot see any device attached to this port.
The options are:
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Others:
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USB PowerShare This field configures the USB PowerShare feature behavior. This option allows you to charge external devices using
the stored system battery power through the USB PowerShare port (disabled by default)..
Audio This field enables or disables the integrated audio controller. By default, the Enable Audio option is selected. The
options are:
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Keyboard This field lets you choose the operating mode of the keyboard illumination feature. The keyboard brightness level
Illumination can be set from 0% to 100%. The options are:
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SATA-4
M.2 PCI-e SSD-0
M.2 PCIe SSD-1
SATA-3
Enable SMART Reporting
Enable Boot support (by default enable)
Enable Thunderbolt ports (by default enable)
Always Allow dell docks
Enable external USB ports
Enable Thubderbolt Boot Support
Enable Thunderbolt (and PCIE behind TBT) Pre-boot
Security level-no security
Security level-user configuration (selected by default)
Security level-secure connect
Security level- Display port only
NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings.
Enable Microphone (by default enable)
Enable Internal Speaker (by default enable)
Disabled (selected by default)
Dim
Bright
System setup 41