Dell EMC PowerEdge R940 Installation And Service Manual page 50

Serial Communication details
The Serial Communication screen details are explained as follows:
Option Description
Serial
Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS. BIOS console redirection can
Communication
also be enabled, and the port address can be specified. This option is set to Auto by default.
Enables the COM port or Console Redirection options. This option is set to Off by default.
Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS. Enables the COM1 port. This
option is set to On with Console Redirection via COM1 by default.
Serial Port Address Enables you to set the port address for serial devices. This option is set to Serial Device1=COM2, Serial Device
2=COM1 by default.
External Serial
Enables you to associate the External Serial Connector to Serial Device 1, Serial Device 2, or the Remote Access
Connector
Device by using this option. This option is set to Serial Device 1 by default.
Enables you to associate the External Serial Connector to Serial Device 1.
Failsafe Baud Rate Specifies the failsafe baud rate for console redirection. The BIOS attempts to determine the baud rate
automatically. This failsafe baud rate is used only if the attempt fails, and the value must not be changed. This
option is set to 115200 by default.
Remote Terminal Sets the remote console terminal type. This option is set to ANSIVT 100/VT 220 by default.
Type
Redirection After Enables or disables the BIOS console redirection when the operating system is loaded. This option is set to
Boot Enabled by default.
50 Pre-operating system management applications
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 from within
the BIOS setup utility may not always revert the serial MUX setting to the default setting of Serial
Device 1.
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.
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 from within
the BIOS setup utility may not always revert this setting to the default setting of Serial Device 1.