Reference Guide

BIOS Settings Name Description Supported
Operating
System(s)
• Disabled
• Enabled
BlinkPSULED1
Provides the alert for the PSU 1. The Power Supply Unit(PSU) 1
LED starts to blink when it is Enabled.
Possible value:
• Enabled
Windows
BlinkPSULED2
Provides the alert for the PSU 2. The Power Supply Unit(PSU) 2
LED starts to blink when it is Enabled.
Possible value:
• Enabled
Windows
BlockS3
Enables or Disables the Block S3 sleep state. If this option is
Disabled, the system BIOS supports OSPM/ACPI S3 (suspend
to RAM) operation. This moves the system authentication into
the operating system and bypasses any Preboot Authentication
on resume.
If this option is Enabled, the system BIOS blocks all OSPM/ACPI
S3 (suspend to RAM) requests and enforces Preboot
Authentication on all non-S3 resumes.
Possible values are:
• Disabled
• Enabled
Windows, Linux
Boot Mode
Determines the system’s boot mode. Enables booting to Unified
Extensible Firmware Interface (UEFI) capable operating
systems. This ensures compatibility with operating systems that
do not support UEFI.
Possible values are:
• UEFI — Enables booting to Unified Extensible Firmware
Interface (UEFI) capable operating systems.
• BIOS — Ensures compatibility with operating systems that
do not support UEFI.
NOTE: Legacy boot mode is not allowed when secure
boot is Enabled or legacy option ROM is Disabled.
Windows, Linux
Boot-time Video
Sets the Primary Video source.
Possible values are:
• On board
• Add-in
Windows, Linux
Boot Speed
Sets CPU speed to default or compatible (low speed). This
feature is implementation-dependent. There is no set speed for
Compatible, only that it is slower than default. Some platforms
implement this by turning off cache and others by STPCLK
throttling.
Possible values are:
• Default
• Compatible
Windows
Broadcom ASF
Sets the ASF (Alert Standard Format) mode.
Windows
BIOS settings supported in Dell Command | Monitor 10.3 251