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Option Description
the Integrated Network Card 1 option. Configure this function by using the NIC
management utilities of the system.
I/OAT DMA Engine Enables or disables the I/OAT option. Enable only if the hardware and software
support the feature.
Embedded Video
Controller
Allows you to Enable or Disable the Embedded Video Controller. This option is set
to Enabled by default.
Current State of
Embedded Video
Controller
Displays the current state of the embedded video controller. The Current State of
Embedded Video Controller option is a read-only field, indicating the current state
for the Embedded Video Controller. If the Embedded Video Controller is the only
display capability in the system (that is, no add-in graphics card 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.
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.
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 is
allowed to initialize 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 above 4GB
Enables or disables the support for PCIe devices that require large amounts of
memory. This option is set to Enabled by default.
Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement
feature controls the configuration of PCIe cards installed in the specified slot. Slot
disablement must be used 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.
Serial Communication screen
You can use the Serial Communication screen to view the properties of the serial communication port.
To view the Serial Communication screen, click System Setup Main Menu → System BIOS → Serial
Communication.
The Serial Communication screen details are explained as follows:
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
Device 1=COM2, Serial Device 2=COM1 by default.
NOTE: You can use only Serial Device 2 for the Serial Over LAN (SOL) feature.
To use console redirection by SOL, configure the same port address for
console redirection and the serial device.
NOTE: Every time the system boots, the BIOS syncs the serial MUX setting
saved in iDRAC. The serial MUX setting can independently be changed in
iDRAC. Loading the BIOS default settings from within the BIOS setup utility
may not always revert the serial MUX setting to the default setting of Serial
Device 1.
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