Service Manual

Option Description
PCI ASPM L1 Link
Power
Management
Enables or disables the PCI ASPM L1 Link Power Management. This option is set to Enabled by default.
System Security
You can use the System Security screen to perform specific functions such as setting the system password, setup password and
disabling the power button.
Viewing System Security
To view the System Security screen, perform the following steps:
Steps
1. Power on or restart your system.
2. Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3. On the System Setup Main Menu screen, click System BIOS.
4. On the System BIOS screen, click System Security.
System Security Settings details
About this task
The System Security Settings screen details are explained as follows:
Option
Description
CPU AES-NI Improves the speed of applications by performing encryption and decryption by using the Advanced Encryption
Standard Instruction Set (AES-NI). This option is set to Enabled by default.
Setup Password Enables you to set the system setup password. This option is read-only if the password jumper is not installed in
the system.
Password Status Enables you to lock the system password. This option is set to Unlocked by default.
TPM Security
NOTE: The TPM menu is available only when the TPM module is installed.
Enables you to control the reporting mode of the TPM. The TPM Security option is set to Off by default. You
can only modify the TPM Status, TPM Activation, and the Intel TXT fields if the TPM Status field is set to either
On with Pre-boot Measurements or On without Pre-boot Measurements.
Intel(R) TXT Enables you to set the Intel Trusted Execution Technology (TXT) option. To enable the Intel TXT option,
virtualization technology and TPM Security must be enabled with Pre-boot measurements. This option is set to
Off by default.
Power Button Enables you to set the power button on the front of the system. This option is set to Enabled by default.
AC Power
Recovery
Sets how the system behaves after AC power is restored to the system. This option is set to Last by default.
UEFI Variable
Access
Provides varying degrees of securing UEFI variables. When set to Standard (the default), UEFI variables are
accessible in the operating system per the UEFI specification. When set to Controlled, selected UEFI variables
are protected in the environment, and new UEFI boot entries are forced to be at the end of the current boot
order.
Secure Boot Enables Secure Boot, where the BIOS authenticates each pre-boot image by using the certificates in the Secure
Boot Policy. Secure Boot is set to Disabled by default.
Pre-operating system management applications 29