Dell R820 owner manual Serial Communications Screen

Menu Item	Description
User Accessible USB	Allows you enable or disable the user accessible USB ports. Selecting Only Back Ports On
Ports	disables the front USB ports and selecting All Ports Off disables both front and back USB ports.
	By default, the User Accessible USB Ports option is set to All Ports On.
Internal USB Port	Allows you to enable or disable the internal USB port. By default, the Internal USB Port option
	is set to On.
Internal SD Card Port	Enables or disables the system’s internal SD card port. By default, Internal SD Card Port option
	is set to On.
	NOTE: This option is displayed only if IDSDM is installed on the system board.
Internal SD Card	If set to Mirror mode, data is written on both SD cards. If any one of the SD card fails, data is
Redundancy	written to the active SD card. Data from this card is copied to the replacement SD card at the
	next boot. By default, Internal SD Card Redundancy option is set to Mirror.
	NOTE: This option is displayed only if IDSDM is installed on the system board.
Integrated Network	Allows you to enable or disable the integrated network card 1. By default, the Integrated
Card 1	Network Card 1 option is set to Enabled.
OS Watchdog Timer	Allows you to enable or disable the OS watchdog timer. When this field is enabled, the
	operating system initializes the timer and the OS watchdog timer helps in recovering the
	operating system. By default, the OS Watchdog Timer option is set to Disabled.
Embedded Video	Allows you to enable or disable the Embedded Video Controller. By default, the embedded
Controller	video controller is Enabled.
SR-IOV Global Enable	Allows you to enable or disable the BIOS configuration of Single Root I/O Virtualization (SR-
	IOV) devices. By default, the SR-IOV Global Enable option is set to Disabled.
Slot Disablement	Allows you to enable or disable available PCIe slots on your system. The Slot Disablement
	feature controls the configuration of PCIe cards installed in the specified slot.
	CAUTION: 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.
Memory Mapped I/O	Allows you to enable support for PCIe devices that require large amounts of memory. By
above 4 GB	default, the option is set to Enabled.
Serial Communications Screen
Menu Item	Description
Serial Communication	Allows you to select serial communication devices (Serial Device 1 and Serial Device 2) in the
	BIOS. BIOS console redirection can also be enabled and the port address used can be
	specified. By default, Serial Communication option is set to On without Console Redirection.
Serial Port Address	Allows 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.

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