Dell M820 owner manual System Security Screen

Menu Item	Description
	NOTE: When C state is enabled, the Monitor/Mwait sub-option must also be
	enabled. This field allows you to enable Monitor/Mwait instructions. Disable
	this option if you disable the C States option in the Custom mode. When C
	States is enabled in Custom mode, changing the Monitor/Mwait setting does
	not impact system power/performance.
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 numbers of DIMMs installed. By default, the Memory Operating Voltage option is set to Auto.

System Security Screen

Menu Item	Description
Intel AES-NI	The Intel AES-In option improves the speed of applications by performing
	encryption and decryption using the Advanced Encryption Standard set and is set
	to Enabled by default.
System Password	Allows you to set the system password. This option 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

TPM Status

TPM Clear

Intel TXT

Allows you to change the operational state of the TPM. By default, the TPM Activation option is set to No Change.

Displays the TPM status.

CAUTION: Clearing the TPM results in 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 enable or disable Intel Trusted Execution Technology. 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.

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