Dell OptiPlex 7090 Small Form Factor Service Manual - Page 76

Security, Table 20. Power continued, Table 21. Security

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Table 20. Power (continued) Options Active State Power Management (ASPM) Block Sleep Intel Speed Shift Technology Intel Speed Shift Technology Security This section provides security details and settings. Table 21. Security Options TPM 2.0 Security TPM 2.0 Security On Attestation Enable Key Storage Enable SHA-256 Clear Description ● Power On - System powers on after AC power is restored ● Last Power State - System returns to the previous state after AC power recovery This section allows the user to set the ASPM level. The options here are: ● Auto - There is handshaking between the device and PCI Express hub (Selected by default) ● Disabled - ASPM power management is turned off at all times ● L1 Only - ASPM power management is set to level 1 This section determines how aggressively the system is conserving power while in Shutdown (S5) or Hiernate (S4) mode. The options are: ● Disabled ● Enabled in S5 only ● Enabled in S4 and S5 (Selected by default) This section contains a toggle switch to allow the user to enable or disable Intel Speed Shift Technology support. This feature enables the operating system to select appropriate processor performance automatically (ON by default). Description This section contains a toggle switch to select whether Trusted Platform Module(TPM) is visible to the Operating System(OS). (ON by default) This section contains a toggle switch which lets the user control whether the TPM Endorsement Hierarchy is available to the operating system (OFF by default). This section contains a toggle switch that allows the user to control whether TPM Storage Hierarchy is available to the operating system (ON by default). This section contains a toggle switch that when enabled, allows the BIOS and the TPM to use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot (ON by default). This section contains a toggle switch which clears the TPM owner information, and returns the TPM to the default state (OFF by default). 76 System setup

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Table 20. Power (continued)
Options
Description
●
Power On - System powers on after AC power is restored
●
Last Power State - System returns to the previous state
after AC power recovery
Active State Power Management (ASPM)
This section allows the user to set the ASPM level. The
options here are:
●
Auto - There is handshaking between the device and PCI
Express hub (Selected by default)
●
Disabled - ASPM power management is turned off at all
times
●
L1 Only - ASPM power management is set to level 1
Block Sleep
This section determines how aggressively the system is
conserving power while in Shutdown (S5) or Hiernate (S4)
mode. The options are:
●
Disabled
●
Enabled in S5 only
●
Enabled in S4 and S5 (Selected by default)
Intel Speed Shift Technology
Intel Speed Shift Technology
This section contains a toggle switch to allow the user to
enable or disable Intel Speed Shift Technology support. This
feature enables the operating system to select appropriate
processor performance automatically (ON by default).
Security
This section provides security details and settings.
Table 21. Security
Options
Description
TPM 2.0 Security
TPM 2.0 Security On
This section contains a toggle switch to select whether
Trusted Platform Module(TPM) is visible to the Operating
System(OS). (ON by default)
Attestation Enable
This section contains a toggle switch which lets the user
control whether the TPM Endorsement Hierarchy is available
to the operating system (OFF by default).
Key Storage Enable
This section contains a toggle switch that allows the user to
control whether TPM Storage Hierarchy is available to the
operating system (ON by default).
SHA-256
This section contains a toggle switch that when enabled,
allows the BIOS and the TPM to use the SHA-256 hash
algorithm to extend measurements into the TPM PCRs during
BIOS boot (ON by default).
Clear
This section contains a toggle switch which clears the TPM
owner information, and returns the TPM to the default state
(OFF by default).
76
System setup