Menu Item

Description

Internal SD Card

If set to Mirror mode, data is written on both SD cards. If any one of the SD card

Redundancy

fails, data is written to the active SD card. Data from this card is copied to the

 

replacement SD card at the next boot. By default, Internal SD Card Redundancy

 

option is set to Mirror.

 

NOTE: This option is displayed only if IDSDM is installed on the system board.

Integrated

Allows you to enable or disable the integrated network card 1. By default, the

Network Card 1

Integrated Network Card 1 option is set to Enabled.

OS Watchdog

Allows you to enable or disable the OS watchdog timer. When this field is enabled,

Timer

the operating system initializes the timer and the OS watchdog timer helps in

 

recovering the operating system. By default, the OS Watchdog Timer option is set

 

to Disabled.

Embedded Video

Allows you to enable or disable the Embedded Video Controller. By default, the

Controller

embedded video controller is Enabled.

SR-IOV Global

Allows you to enable or disable the BIOS configuration of Single Root I/O

Enable

Virtualization (SR-IOV) devices. By default, the SR-IOV Global Enable option is set

 

to Disabled.

Slot Disablement

Allows you to enable or disable available PCIe slots on your system. The Slot

 

Disablement feature controls the configuration of PCIe cards installed in the

 

specified slot.

 

CAUTION: Slot disablement must be used only when the installed peripheral

 

card is preventing booting into the Operating System or causing delays in

 

system startup. If the slot is disabled, both the Option ROM and UEFI driver

 

are disabled.

Memory Mapped

Allows you to enable support for PCIe devices that require large amounts of

I/O above 4 GB

memory. By default, the option is set to Enabled.

Serial Communications Screen

Menu Item

Description

Serial

Allows you to select serial communication devices (Serial Device 1 and Serial

Communication

Device 2) in the BIOS. BIOS console redirection can also be enabled and the port

 

address used can be specified. By default, Serial Communication option is set to

 

On without Console Redirection.

Serial Port Address

Allows you to set the port address for serial devices. By default, the Serial Port

 

Address option is set to Serial Device 1=COM2, Serial Device 2=COM1.

 

NOTE: Only Serial Device 2 can be used for Serial Over LAN (SOL). To use

 

console redirection by SOL, configure the same port address for console

 

redirection and the serial device.

External Serial

Allows you to associate the external serial connector to serial device 1, serial device

Connector

2, or remote access device. By default, the External Serial Connector option is set

 

to Serial Device1.

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Dell R420xr owner manual Serial Communications Screen