Option Description
is installed), then the Embedded Video Controller is automatically used as the primary
display even if the Embedded Video Controller setting is set to Disabled.
PCIe Preferred IO Device When set to Enabled, you can provide the Bus/device/function address (in decimal)
to choose end device for preferred IO device. This option is set to Disabled by
default.
SR-IOV Global Enable Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV)
devices. This option is set to Disabled by default.
Internal SD Card Port
Enables or disables the internal SD card port of the Internal Dual SD Module
(IDSDM). This option is set to On by default.
Internal SD Card Redundancy
Configures the redundancy mode of the Internal Dual SD Module (IDSDM). When set
to Mirror Mode, data is written on both SD cards. After failure of either card and
replacement of the failed card, the data of the active card is copied to the offline
card during the system boot.
When Internal SD Card Redundancy is set to Disabled, only the primary SD card is
visible to the OS. This option is set to Mirror by default.
Internal SD Primary Card By default, the primary SD card is selected to be SD Card 1. If SD Card 1 is not
present, then the controller selects SD Card 2 to be the primary SD card. This option
is set to SD Card 1 by default.
OS Watchdog Timer If your system stops responding, this watchdog timer aids in the recovery of your
operating system. When this option is set to Enabled, the operating system initializes
the timer. When this option is set to Disabled (the default), the timer does not have
any effect on the system.
Memory Mapped I/O Limit Controls where MMIO is mapped. The 1 TB option is designed for specific OS which
cannot support MMIO over 1 TB. This option is set to 8 TB by default. The default
option is the maximum address that the system supports and recommended in most
cases.
Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement
feature controls the configuration of the PCIe cards installed in the specified slot.
Slots must be disabled only when the installed peripheral card prevents booting into
the operating system or causes delays in system startup. If the slot is disabled, both
the Option ROM and UEFI drivers are disabled. Only slots that are present on the
system will be available for control.
Slot n: Enables or disables or only the boot driver is disabled for the PCIe slot n. This
option is set to Enabled by default.
Slot Bifurcation Auto Discovery Bifurcation Settings allows Platform Default Bifurcation and
Manual bifurcation Control.
The default is set to Platform Default Bifurcation. The slot bifurcation field is
accessible when set to
Manual bifurcation Control and is grayed out when set to
Platform Default Bifurcation.
Serial Communication
To view the Serial Communication screen, power on the system, press F2, and click System Setup Main Menu > System BIOS >
Serial Communication.
Table 27.
Serial Communication details
Option Description
Serial Communication Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS.
BIOS console redirection can also be enabled, and the port address can be specified.
This option is set to Auto by default.
Serial Port Address Enables you to set the port address for serial devices. This option is set to Serial
Device1=COM2, Serial Device 2=COM1 by default.
32 Pre-operating system management applications
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