Dell XPS 13 9315 Service Manual page 46

Table 9. System setup options—Power menu (continued)
Power
Power On Lid Open
Intel Speed Shift Technology
Table 10. System setup options—Security menu
Security
Trusted Platform Module (TPM)
TPM On
Physical Presence Interface (PPI) Bypass
for Enable Commands
Physical Presence Interface (PPI) Bypass
for Disable Commands
Physical Presence Interface (PPI) Bypass
for Clear Commands
Attestation Enable
Key Storage Enable
46 System setup
By default, the Enable Lid Switch option is enabled.
When enabled, allows the computer to power on from the off state whenever the
lid is opened.
By default, the Power On Lid Open option is enabled.
Enables or disables the Intel Speed Shift Technology support. When enabled, the
operating system selects the appropriate processor performance automatically.
By default, the Intel Speed Shift Technology option is enabled.
Trusted Platform Module (TPM) is a security device that stores computer-
generated keys for encryption and features such as BitLocker, Virtual Secure
Mode, remote Attestation.
By default, the Trusted Platform Module (TPM) option is enabled.
For additional security, Dell Technologies recommends keeping Trusted Platform
Module (TPM) enabled to allow these security technologies to fully function.
Allows you to enable or disable TPM.
By default, the TPM On option is enabled.
For additional security, Dell Technologies recommends keeping TPM enabled to
allow these security technologies to fully function.
The Physical Presence Interface (PPI) Bypass options can be used to allow
the operating system to manage certain aspects of the TPM. If these options
are enabled, you are not prompted to confirm certain changes to the TPM
configuration.
By default, the PPI Bypass for Enable Commands option is enabled.
For additional security, Dell Technologies recommends keeping the PPI Bypass
for Enable Commands option enabled.
By default, the PPI Bypass for Disable Commands option is disabled.
For additional security, Dell Technologies recommends keeping the PPI Bypass
for Disable Commands option disabled.
By default, the PPI Bypass for Clear Commands option is disabled.
For additional security, Dell Technologies recommends keeping the PPI Bypass
for Clear Commands option disabled.
The Attestation Enable option controls the endorsement hierarchy of TPM.
Disabling the Attestation Enable option prevents TPM from being used to
digitally-sign certificates.
By default, the Attestation Enable option is enabled.
For additional security, Dell Technologies recommends keeping the Attestation
Enable option enabled.
NOTE: When disabled, this feature may cause compatibility issues or loss of
functionality in some operating systems.
The Key Storage Enable option controls the storage hierarchy of TPM, which is
used to store digital keys. Disabling the Key Storage Enable option restricts the
ability of TPM to store owner's data.