Dell EMC PowerEdge C6420 Manual page 48

4 On the System BIOS screen, click Integrated Devices.
Integrated Devices details
The Integrated Devices screen details are explained as follows:
Option Description
User Accessible Enables or disables the USB ports. Selecting All Ports Off disables all USB ports. The USB keyboard and mouse
USB Ports 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.
iDRAC Direct USB The iDRAC Direct USB port is managed by iDRAC exclusively with no host visibility. This option is set to ON or
Port OFF. When set to OFF, iDRAC does not detect any USB devices installed in this managed port.
Internal USB Port Enables or disables the internal USB port. This option is set to On or Off.
Embedded NIC1 Enables or disables the Embedded NIC1 port. The option is set to Enabled by default.
I/OAT DMA Engine Enables or disables the I/O Acceleration Technology (I/OAT) option. I/OAT is a set of DMA features designed to
accelerate network traffic and lower CPU utilization. Enable only if the hardware and software support the feature.
Embedded Video Enables or disables the use of Embedded Video Controller as the primary display. When set to Enabled, the
Controller 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 Controller
Embedded Video option is a read-only field. If the Embedded Video Controller is the only display capability in the system (that is, no
Controller 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 is set to
Enable 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 to On by
Port default.
Internal SD Card Configures the redundancy mode of the Internal Dual SD Module (IDSDM). When set to Mirror Mode, data is
Redundancy 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 Primary When Redundancy is set to Disabled, either one of the SD card can be selected to present itself as mass storage
Card 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 the primary SD card.
OS Watchdog If your system stops responding, this watchdog timer aids in the recovery of your operating system. When this
Timer 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 Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this option only
I/O above 4 GB for 64-bit operating systems. This option is set to Enabled by default.
48 Pre-operating system management applications
NOTE: Selecting All Ports Off disables the USB management port and also restricts access to the
iDRAC features.
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.