Menu Item

Description

 

 

SR-IOV Global Enable

Enables or disables the BIOS configuration of Single Root I/O Virtualization

 

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

 

Disabled.

OS Watchdog Timer

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

 

your operating system. When this field is set to Enabled, the operating system

 

is allowed to initialize the timer. When the option is set to Disabled (the

 

default), the timer will have no effect on the system.

Memory Mapped I/O

Enables or disables the support for PCIe devices that require large amounts of

above 4 GB

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

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. 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.

Serial Communication screen

You can use the Serial Communication screen to view the properties of the serial communication port. To view the Serial Communication click System Setup Main Menu System BIOS Serial Communication.

Menu Item

Description

 

 

Serial Communication

Selects serial communication devices (Serial Device 1 and Serial Device 2)

 

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

 

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

 

to Auto.

Serial Port Address

Enables 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: 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. Therefore, loading the BIOS default settings from

 

within the BIOS setup utility may not always revert this setting to the

 

default setting of Serial Device 1.

External Serial Connector

You can associate the External Serial Connector to Serial Device 1, Serial

 

Device 2, or the Remote Access Device using this field.

 

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.

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Dell C4130 owner manual Serial Communication screen