Dell VxRail VD-4520c Manual page 22

Option
OS Watchdog Timer
Empty Slot Unhide
Slot Disablement
Slot Bifurcation
Serial Communication
To view the Serial Communication screen, power on the system, press F2, and click System Setup Main Menu > System
BIOS > Serial Communication.
NOTE: The serial port is optional for the VxRail VD-4520c compute sled. The Serial Communication option is applicable only
if the serial COM port is installed in the system.
The following table provides the details of the options available on the Serial Communication screen:
Option
Serial Communication
Serial Port Address
External Serial Connector
22 Pre-operating system management applications
Description
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 (default), the timer does not have any effect on the system.
Enables or disables the root ports of all the empty slots that are accessible to the BIOS and
operating system. This option is set to Disabled by default.
No slots are present in this system.
Auto Discovery Bifurcation Settings allows Platform Default Bifurcation,Auto
Discovery of Bifurcation, and Manual bifurcation Control.
This option is set to Platform Default Bifurcation by default. The slot bifurcation field is
accessible when set to Manual bifurcation Control and is disabled when set to Platform
Default Bifurcation and Auto Discovery of Bifurcation.
NOTE: The slot bifurcation supports on PCIe slot only, does not support slot type from
Paddle card to Riser and Slimline connector to Riser.
Description
Enables the serial communication options. Selects serial communication devices (Serial
Device 1 and Serial Device 2) Serial Device 1in BIOS. BIOS console redirection can also
be enabled, and the port address can be specified.
The options available for System without serial COM port (DB9) are On without
Console Redirection,
On with Console Redirection, Off. This option is set to
Off by default.
The options available for System with serial COM port (DB9) are On without
Console Redirection,
On with Console Redirection via Com1, On with Console Redirection via Com2,
Off, Auto. This option is set to Auto by default.
The options available for System are On without Console Redirection,
On with Console Redirection via Com1, On with Console Redirection via Com2,
Off, Auto. This option is set to
Auto by default.
Enables you to set the port address for serial devices. This option is set to Serial
Device1=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 that
is saved in iDRAC. The serial MUX setting can independently be changed in iDRAC.
Loading the BIOS default settings from within the BIOS setup utility may not
always revert the serial MUX setting to the default setting of Serial Device 1.
Enables you to associate the External Serial Connector to Serial Device 1 by using
this option.Enables you to associate the External Serial Connector to Serial Device 1
by using this option. This option is set to Serial Device 1 by default.