Option Description
USB 3.0 Setting Enables or disables the USB 3.0 support. Enable this option only if your operating system supports USB
3.0. If you disable this option, devices operate at USB 2.0 speed. USB 3.0 is enabled by default.
User Accessible
USB Ports
Enables or disables the USB ports. Selecting Only Back Ports On disables the front USB ports, selecting
All Ports Off disables all USB ports. The USB keyboard and mouse operate during boot process in certain
operating systems. After the boot process is complete, the USB keyboard and mouse do not work if the
ports are disabled.
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 RAID
Controller
Enables or disables the integrated RAID controller. 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).
The Embedded NIC1 and NIC2 option is mutually exclusive with the Integrated Network Card 1 option.
Configure the Embedded NIC1 and NIC2 option 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.
I/O Snoop
Holdoff
Response
Selects the number of cycles PCI I/O can withhold snoop requests from the CPU, to allow time
to complete its own write to LLC. This setting can help improve performance on workloads where
throughput and latency are critical.
Embedded Video
Controller
Enables or disables 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.
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 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 need 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. 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.
Slot Bifurcation Enables you to control the bifurcation of the specified slot. Only slots that are present in your system are
available for control.
The configuration for a x16 slot is default (x16), x8x8, or x4x4x4x4.
The configuration for a x8 slot is default (x8) or x4x4.
Slots Description
Slot 1 Bifurcation
Controls the bifurcation of PCIe cards installed in the specified slot.
60 Pre-operating system management applications
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