Dell R420xr owner manual System Security Screen

Menu Item	Description
Memory Patrol	Allows you to set the memory patrol scrub frequency. By default, the Memory
Scrub	Patrol Scrub option is set to Standard.
Memory Refresh	Allows you to set the memory refresh rate. By default, the Memory Refresh Rate
Rate	option is set to 1x.

Memory Operating Allows you to set the DIMM voltage selection. When set to Auto, the system

Voltageautomatically sets the system voltage to the optimal setting based on the DIMM capacity and the number of DIMMs installed. By default, the Memory Operating Voltage option is set to Auto.

Collaborative CPU When set to Enabled, the CPU power management is controlled by the OS DBPM

Performance and the System DBPM (DAPC). By default, the option is set to Disabled.

Control

System Security Screen

Menu Item	Description
Intel AES-NI	Improves the speed of applications by performing encryption and decryption using
	the Advanced Encryption Standard Instruction Set and is set to Enabled by default.
System Password	Allows you to set the system password. This option is set to Enabled by default and
	is read-only if the password jumper is not installed in the system.
Setup Password	Allows you to set the setup password. This option is read-only if the password
	jumper is not installed in the system.
Password Status	Allows you to lock the system password. By default, the Password Status option is
	set to Unlocked.
TPM Security	Allows you to control the reporting mode of the Trusted Platform Module (TPM).
	By default, the TPM Security option is set to Off. You can only modify the TPM
	Status, TPM Activation , and Intel TXT fields if the TPM Status field is set to either
	On with Pre-boot Measurements or On without Pre-boot Measurements.
TPM Activation	Allows you to change the operational state of the TPM. By default, the TPM
	Activation option is set to No Change.

TPM Status TPM Clear

Intel TXT

BIOS Update Control

Displays the TPM status.

CAUTION: Clearing the TPM results in the loss of all keys in the TPM. The loss of TPM keys may affect booting to the operating system.

Allows you to clear all the contents of the TPM. By default, the TPM Clear option is set to No.

Allows you to enable or disable Intel Trusted Execution Technology (TXT). To enable Intel TXT, Virtualization Technology must be enabled and TPM Security must be Enabled with Pre-boot measurements. By default, the Intel TXT option is set to Off.

Allows you to update the BIOS using either DOS or UEFI shell-based flash utilities. For environments that do not require local BIOS updates, it is recommended to set

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