Dell E04B Reference Manual - Page 17

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Option

Description

The USB keyboard and mouse still function in certain USB ports during the boot process, depending on

the selection. After the boot process is complete, the USB ports will be enabled or disabled as per the

setting.

Internal USB Port Enables or disables the internal USB port. This option is set to On by default.

iDRAC Direct

The iDRAC Direct USB port is managed by iDRAC exclusively with no host visibility. This option is set to

USB Port

ON or OFF. When set to OFF, iDRAC does not detect any USB devices installed in this managed port.

This option is set to On by default.

Integrated RAID

Enables or disables the integrated RAID controllers. This option is set to Enabled by default.

Controller

I/OAT DMA

Enables or disables the I/O Acceleration Technology (I/OAT) option. I/OAT is a set of DMA features

Engine

designed to accelerate network traffic and lower CPU utilization. Enable only if the hardware and

software support the feature.

I/O Snoop

Enables you to select the number of cycles PCI I/O can withhold snoop requests from the CPU to allow

HoldOff

time to complete its own write to LLC. This setting can help improve performance on workloads where

Response

throughput and latency are critical.

Embedded Video

Enables or disables the use of Embedded Video Controller as the primary display. When set to Enabled,

Controller

the Embedded Video Controller will be the primary display even if add-in graphic cards are installed. When

set to Disabled, an add-in graphics card will be used as the primary display. BIOS will output displays

to both the primary add-in video and the embedded video during POST and pre-boot environment. The

embedded video will then be disabled right before the operating system boots. This option is set to

Enabled by default.

Current State of

Displays the current state of the embedded video controller. The Current State of Embedded Video

Embedded Video

Controller option is a read-only field. If the Embedded Video Controller is the only display capability in the

Controller

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

Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option

Enable

is set to Disabled by default.

Internal SD Card

Enables or disables the Internal SD Card Port of the Internal Dual SD Module (IDSDM). This option is set

Port

to On by default.

Internal SD Card

Configures the redundancy mode of the Internal Dual SD Module (IDSDM). When set to Mirror Mode,

Redundancy

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 Disabled by default.

Internal SD

When Redundancy is set to Disabled, either one of the SD card can be selected to present itself as

Primary Card

mass storage device by setting it to be primary card. By default primary SD card is selected to be SD Card

1. If SD Card 1 is not present, then the controller will select SD Card 2 to be primary SD card.

OS Watchdog

If your system stops responding, this watchdog timer aids in the recovery of your operating system.

Timer

When this option is set to Enabled, the operating system initializes the timer. When this option is set to

Disabled (default), the timer does not have any effect on the system. This option is set to Disabled by

default.

Empty Slot

Enables or disables the root ports of all the empty slots that are accessible to the BIOS and OS. This

Unhide

option is set to Disabled by default.

Memory Mapped

Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this

I/O above 4 GB

option only for 64-bit operating systems. This option is set to Enabled by default.

Memory Mapped

When set to 12 TB, the system will map MMIO base to 12 TB. Enable this option for an OS that requires

I/O Base

44 bit PCIe addressing.

NOTE:

When there are multiple add-in graphic cards installed in the system, the first card discovered

during PCI enumeration is selected as the primary video. You might have to re-arrange the cards in

the slots in order to control which card is the primary video.

Pre-operating system management applications