Option Description
NOTE: Selecting Only Back Ports On and All Ports Off disables the USB 
management port and also restricts access to iDRAC features.
Internal USB Port Enables or disables the internal USB port. This option is set to Enabled by default.
Integrated 
Network Card 1
Enables or disables the integrated network card.
Embedded NIC1 
and NIC2
NOTE: The Embedded NIC1 and NIC2 options are only available on systems 
that do not have Integrated Network Card 1.
Enables or disables the Embedded NIC1 and NIC2 options. If set to Disabled, the 
NIC may still be available for shared network access by the embedded 
management controller. The embedded NIC1 and NIC2 options are only available 
on systems that do not have Network Daughter Cards (NDCs). This option is 
mutually exclusive with the Integrated Network Card 1 option. Configure this 
function by using the NIC management utilities of the system.
Embedded Video 
Controller
Allows you to enable or disable the Embedded Video Controller option. 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. 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.
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 above 4 GB
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 details
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.
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