Owners Manual

Option Description
I/OAT DMA
Engine
Enables or disables the I/OAT option. Enable only if the hardware and software support the feature.
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.
Serial Communication
You can use the Serial Communication screen to view the properties of the serial communication port.
Viewing Serial Communication
To view the Serial Communication screen, perform the following steps:
Steps
1. Turn on, or restart your system.
2. Press F2 immediately after you see the following message:
F2 = System Setup
NOTE:
If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3. On the System Setup Main Menu screen, click System BIOS.
4. On the System BIOS screen, click Serial Communication.
Serial Communication details
About this task
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.
NOTE: You can use only Serial Device 2 for the Serial Over LAN (SOL) feature. To use console
redirection by SOL, configure the same port address for console redirection and the serial device.
NOTE: Every time the system boots, the BIOS syncs the serial MUX setting saved in iDRAC. The
serial MUX setting can independently be changed in iDRAC. Loading the BIOS default settings
40 Pre-operating system management applications