Dell XPS 15 9520 Service Manual - Page 60
Security, TPM 2.0 Security On, SMM Security Mitigation, Intel SGX, Passwords, Enable Strong Passwords
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Table 7. System setup options-Security menu (continued) Security Default: Enabled TPM 2.0 Security On Select whether or not the Trusted Platform Model (TPM) is visible to the OS. Default: ON PPI Bypass for Enable Commands Enables or disables the OS to skip BIOS Physical Presence Interface (PPI) user prompts when issuing TPM PPI enabled and activate commands. Default: OFF PPI Bypass for Disable Commands Enables or disables The OS to skip BIOS PPI user prompts when issuing TPM PPI Disable and Deactivate commands. Default: OFF PPI Bypass for Clear Commands Enables or disables the operating system to skip BIOS Physical Presence Interface (PPI) user prompts when issuing the Clear command. Default: OFF Attestation Enable Enables to control whether the TPM Endorsement Hierarchy is available to the OS. Disabling this setting restricts the ability to use the TPM for signature operations. Default: ON Key Storage Enable Enables to control whether the TPM Endorsement Hierarchy is available to the OS. Disabling this setting restricts the ability to use the TPM for storing owner data. Default: ON SHA-256 Enables or disables the BIOS and the TPM to use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot. Default: ON Clear Enables or disables the computer to clear the PTT owner information, and returns the PTT to the default state. Default: OFF TPM State Enables or disables the TPM. This is the normal operating state for the TPM when you want to use its complete array of capabilities. Default: Enabled SMM Security Mitigation Enables or disables additional UEFI SMM Security Mitigation protections. Default: OFF NOTE: This feature may cause compatibility issues or loss of functionality with some legacy tools and applications. Intel SGX Enables or disables the Intel Software Guard Extensions (SGX) to provide a secured environment for running code/storing sensitive information. Default: Software Control Table 8. System setup options-Passwords menu Passwords Enable Strong Passwords Enables or disables strong passwords. Default: OFF Password Configuration 60 System setup
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