Reference Guide

BIOS Settings Name Description Supported
Operating
System(s)
LCD Brightness On AC
Sets the panel brightness in effect when the system is using AC
power.
Possible values are: Integers ranging from 0 to 15
Linux
LCD Brightness On Battery
Sets the panel brightness in effect when the system is running
on battery power.
Possible values are: Integers ranging from 0 to 15
Linux
Lid Switch
Enables or disables the lid switch functions.
Possible values are:
• Disable — Display will not be affected when lid is closed.
• Enable — OS setting determines the display behavior when
lid is closed.
Microsoft Windows,
Linux
Liquid Cooler 1
Enables or disables the liquid cooler 1.
Possible values are:
• Enable — Enables the liquid cooler 1.
• Disable — Disables the liquid cooler 1.
Microsoft Windows,
Linux
Liquid Cooler 2
Enables or disables the liquid cooler 2.
Possible values are:
• Enable — Enables the liquid cooler 2.
• Disable — Disables the liquid cooler 2.
Microsoft Windows,
Linux
Limit CPUID Value
Enables or disables the Limit CPUID Value feature.
Possible values are:
• Disable
• Enable
Microsoft Windows,
Linux
M2 PCIE SSD 0
Enables or disables M2 PCIE SSD 0.
Possible values are:
• Disable
• Enable
Microsoft Windows,
Linux
M2 PCIE SSD 1
Enables or disables M2 PCIE SSD 1.
Possible values are:
• Disable
• Enable
Microsoft Windows,
Linux
Management Driver
Sets to Present: the system-management instrumentation sets
this BIOS setting when it loads to instruct that BIOS that
operating system level software is handling any out-of-range
management condition — if a critical threshold is passed, the
driver takes responsibility for shutting down the operating
system and powering off the system. The instrumentation is
responsible for de-registering itself via the Absent BIOS setting
when it unloads. Implementation.
NOTE: To maintain compatibility with Dell Command |
Monitor, a BIOS that implements this BIOS setting via
an Indexed I/O access method must ensure that an
AND-mask of 0xFB and an OR-value of 0x04 maintains
Microsoft Windows
266 BIOS settings supported in Dell Command | Monitor 10.2.1