Latitude 5455 Owner's Manual

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System setup options

NOTE:Depending on your computer and its installed devices, the items that are listed in this system setup section may or may not be displayed.

Table 1. System setup options—Overview menu
The following table describes the Overview menu options in the System setup program.
Overview
Latitude 5455
BIOS Version	Displays the BIOS version number.
Service Tag	Displays the Service Tag of the computer.
Asset Tag	Displays the Asset Tag of the computer.
Manufacture Date	Displays the manufacture date of the computer.
Ownership Date	Displays the ownership date of the computer.
Express Service Code	Displays the Express Service Code of the computer.
Ownership Tag	Displays the Ownership Tag of the computer.
Signed Firmware Update	Displays whether the Signed Firmware Update is enabled on your computer. By default, the Signed Firmware Update option is enabled.
BATTERY
Primary	Displays the primary battery of the computer.
Battery Level	Displays the battery level of the computer.
Battery State	Displays the battery state of the computer.
Health	Displays the battery health of the computer.
AC Adapter	Displays whether an AC adapter is connected. If connected, displays the type of AC adapter that is connected.
PROCESSOR
Processor Type	Displays the processor type.
Maximum Clock Speed	Displays the maximum processor clock speed.
Current Clock Speed	Displays the current processor clock speed.
Core Count	Displays the number of cores on the processor.
Processor L2 Cache	Displays the processor L2 Cache size.
64-Bit Technology	Displays whether 64-bit technology is used.
MEMORY
Memory Installed	Displays the total computer memory installed.
Memory Available	Displays the total computer memory available.
Memory Speed	Displays the memory speed.
Memory Channel Mode	Displays single or dual channel mode.
Memory Technology	Displays the technology that is used for the memory.
DEVICES
Panel Type	Displays the Panel Type of the computer.
Video Controller	Displays the video controller type of the computer.
Wi-Fi Device	Displays the wireless device information of the computer.
Native Resolution	Displays the native resolution of the computer.
Video BIOS Version	Displays the video BIOS version of the computer.
Audio Controller	Displays the audio controller information of the computer.
Bluetooth Device	Displays the Bluetooth device information of the computer.
Pass Through MAC Address	Displays the MAC address of the video pass-through.

Table 2. System setup options—Boot Configuration menu
The following table describes the Boot Configuration menu options in the System setup program.
Boot Configuration
Boot Sequence
Boot Mode: UEFI only	Displays the boot mode of the computer.
Boot Sequence	Displays the boot sequence.
Secure Boot	Secure Boot is a method of guaranteeing the integrity of the boot path by performing additional validation of the operating system and PCI add-in cards. The computer stops booting to the operating system when a component is not authenticated during the boot process. Secure Boot can be enabled in BIOS setup or using management interfaces like Dell Command\|Configure, but can only be disabled from BIOS setup.
Enable Secure Boot	Enables the computer to boot using only validated boot software. By default, the Enable Secure Boot option is disabled. For additional security, Dell Technologies recommends keeping the Secure Boot option enabled to ensure that the UEFI firmware validates the operating system during the boot process.
Enable Microsoft UEFI CA	When disabled, the UEFI CA is removed from the BIOS UEFI Secure Boot database. NOTE:When disabled, the Microsoft UEFI CA can cause your computer to not boot, computer graphics may not function, some devices may not function properly, and the computer could become unrecoverable. By default, the Enable Microsoft UEFI CA option is enabled. For additional security, Dell Technologies recommends keeping the Microsoft UEFI CA option enabled to ensure the broadest compatibility with devices and operating systems.
Secure Boot Mode	Enables or disables the Secure Boot operation mode. By default, the Deployed Mode is selected. NOTE:Deployed Mode should be selected for normal operation of Secure Boot.
Expert Key Management
Enable Custom Mode	Enables or disables the keys in the PK, KEK, db, and dbx security key databases to be modified. By default, the Enable Custom Mode option is disabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Custom Mode Key Management	Selects the custom values for expert key management. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.

Table 3. System setup options—Integrated Devices menu
The following table describes the Integrated Devices menu options in the System setup program.
Integrated Devices
Camera
Enable Camera	Enables the camera. By default, the Enable Camera option is enabled. NOTE:Depending on the configuration ordered, the camera setup option may not be available.
Audio
Enable Internal Speaker	Enables the internal speaker. By default, the Enable Intenal Speaker option is enabled.
USB/Thunderbolt Configuration
Enable External USB Ports	Enable the external USB ports. By default, the Enable External USB Ports option is enabled.
Enable USB Boot Support	Enable the boot up from USB mass storage devices that are connected to external USB ports. By default, the Enable USB Boot Support option is enabled.
Enable Thunderbolt Technology Support
Enable Thunderbolt Technology Support	Enable the associated ports and adapters for Thunderbolt Technology support. By default, the Enable Thunderbolt Technology Support option is enabled.
Disable USB4 PCIE Tunneling	Disables the USB4 PCIE Tunneling option. By default, the Disable USB4 PCIE Tunneling option is disabled.
Video/Power only on Type-C Ports	Enables or disables the Type-C port functionality to video or only power. By default, the Video/Power only on Type-C Ports option is disabled.
Miscellaneous Devices
Enable Fingerprint Reader Device	Enables the Fingerprint Reader Device option. By default, the Enable Fingerprint Reader Device option is enabled.

Table 4. System setup options—Connection menu
The following table describes the Connection menu options in the System setup program.
Connection
Wireless Device Enable
WLAN		Enables or disables the internal WLAN device. By default, the WLAN option enabled.
Bluetooth		Enables or disables the internal Bluetooth device. By default, the Bluetooth option enabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Enable UEFI Network Stack		Enables or disables the UEFI Network Stack and controls the onboard LAN Controller. By default, the Enable UEFI Network Stack option is enabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
HTTP(s) Boot Feature
HTTP(s) Boot		Enable or disable the HTTPs Boot feature. By default, the HTTP(s) Boot option is enabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
HTTP(s) Boot Modes		With Auto Mode, the HTTPs Boot automatically extracts the Boot URL from the DHCP. With Manual Mode, the HTTPs Boot reads the Boot URL from the user-provided data. By default, the Auto Mode option is enabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
CA Certificate		Upload or delete the CA certificate. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.

Table 5. System setup options—Storage menu
The following table describes the Storage menu options in the System setup program.
Storage
Storage Interface		Displays the information of various onboard drives.
Port Enablement		Enables or disables the M.2 PCIe SSD option. By default, the M.2 PCIe SSD option is enabled.
Drive Information		Displays the information of onboard drives.

Table 6. System setup options—Display menu
The following table describes the Display menu options in the System setup program.
Display
Display Brightness
Brightness on battery power		Enables to set the screen brightness when the computer is running on battery power. By default, the screen brightness is set to 50 when the computer is running on battery power.
Brightness on AC power		Enables to set the screen brightness when the computer is running on AC power. By default, the screen brightness is set to 100 when the computer is running on AC power.

Table 7. System setup options—Power menu
The following table describes the Power menu options in the System setup program.
Power
Thermal Management	Enables or disables cooling of fan and manages processor heat to adjust the computer performance, noise, and temperature. By default, the Optimized option is selected. Standard setting for balanced performance, noise, and temperature. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Lid Switch
Enable Lid Switch	Enables or disables the Lid Switch. By default, the Enable Lid Switch option is enabled.
Power On Lid Open	When enabled, it allows the computer to turn on from the off state whenever the lid is opened. By default, the Power On Lid Open option is enabled.

Table 8. System setup options—Security menu
The following table describes the Security menu options in the System setup program.
Security
TPM 2.0 Security	The Trusted Platform Module (TPM) provides various cryptographic services which serve as the cornerstone for many platform security technologies. 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.
TPM 2.0 Security On	Allows you to enable or disable TPM. By default, the TPM 2.0 Security On option is enabled. For additional security, Dell Technologies recommends keeping TPM 2.0 Security On enabled to allow these security technologies to fully function. NOTE: The options that are listed apply to computers with a discrete Trusted Platform Module (TPM) chip.
Attestation Enable	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.
Key Storage Enable	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. By default, the Key Storage Enable option is enabled. For additional security, Dell Technologies recommends keeping the Key Storage Enable option enabled. NOTE:When disabled, this feature may cause compatibility issues or loss of functionality in some operating systems.
Clear	When enabled, the Clear option clears information that is stored in the TPM after exiting the computer's BIOS. This option returns to the disabled state when the computer restarts. By default, the Clear option is disabled. Dell Technologies recommends enabling the Clear option only when TPM data is required to be cleared.
PPI Bypass for Clear Commands	The PPI (Physical Presence Interface) Bypass for Clear Commands option allows the operating system to manage certain aspects of PTT. When enabled, you are not prompted to confirm changes to the PTT configuration. 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.
Chassis Intrusion
Chassis Intrusion	The chassis intrusion detection enables a physical switch that triggers an event when the computer cover is opened. When set to Enabled, a notification is displayed on the next boot and the event is logged in the BIOS Events log. When set to On-Silent, the event is logged in the BIOS Events log, but no notification is displayed. When set to Disabled, no notification is displayed and no event is logged in the BIOS Events log. By default, the On-Silent option is enabled. For additional security, Dell Technologies recommends keeping the Chassis Intrusion Detection option enabled.
Clear Intrusion Warning	The Clear Intrusion Warning option appears only after chassis intrusion is enabled and is tripped. By default, the Clear Intrusion Warning option is disabled.
Block Boot Until Cleared	Enables or disables the Block Boot Until Cleared option. By default, the Block Boot Until Cleared option is disabled. NOTE:When enabled, the computer does not boot until the chassis intrusion is cleared. If the administrator password is set, Setup has to be unlocked before the warning can be cleared.
Data Wipe on Next Boot
Start Data Wipe	Data Wipe is a secure wipe operation that deletes information from a storage device. CAUTION:The secure Data Wipe operation deletes information in a way that it cannot be reconstructed. Commands such as delete and format in the operating system may remove files from showing up in the file system. However, they can be reconstructed through forensic means as they are still represented on the physical media. Data Wipe prevents this reconstruction and is not recoverable. When enabled, the data wipe option will prompt to wipe any storage devices that are connected to the computer on the next boot. By default, the Start Data Wipe option is disabled.
UEFI Boot Path Security	Enables or disables the computer to prompt the user to enter the Administrator password (if set) when booting to a UEFI boot path device from the F12 boot menu. By default, the Always Except Internal HDD option is enabled.
Pluton Security Processor	Pluton Security Processor is used by the operating system to provide security services such as Key Storage Provider functionality. When enabled, the Pluton Security Processor services are available to the operating system. Disabling the Pluton Security Processor might limit some operating system security services and impact functionality. . By default, the Pluton Security Processor option is enabled. For additional security, Dell Technologies recommends keeping the Pluton Security Processor option enabled.

Table 9. System setup options—Passwords menu
The following table describes the Passwords menu options in the System setup program.
Passwords
Admin Password	The Administrator Password prevents unauthorized access to the BIOS Setup options. Once the administrator password is set, the BIOS setup options can only be modified after providing the correct password. The following rules and dependencies apply to the Administrator Password - The administrator password cannot be set if computer and/or internal hard drive passwords are previously set. The administrator password can be used in place of the computer and/or internal hard drive passwords. When set, the administrator password must be provided during a firmware update. Clearing the administrator password also clears the computer password (if set). Dell Technologies recommends using an administrator password to prevent unauthorized changes to BIOS setup options.
System Password	The System Password prevents the computer from booting to an operating system without entering the correct password. The following rules and dependencies apply when the System Password is used - The computer shuts down when idle for approximately 10 minutes at the computer password prompt. The computer shuts down after three incorrect attempts to enter the computer password. The computer shuts down when the Esc key is pressed at the System Password prompt. The computer password is not prompted when the computer resumes from standby mode. Dell Technologies recommends using the computer password in situations where it is likely that a computer may be lost or stolen.
M.2 PCIe SSD-0	The Hard Drive Password can be set to prevent unauthorized access of the data stored on the hard drive. The computer prompts for the hard drive password during boot in order to unlock the drive. A password-secured hard drive stays locked even when removed from the computer or placed into another computer. It prevents an attacker from accessing data on the drive without authorization. The following rules and dependencies apply when the Hard Drive Password is used - The hard drive password option cannot be accessed when a hard drive is disabled in the BIOS setup. The computer shuts down when idle for approximately 10 minutes at the hard drive password prompt. The computer shuts down after three incorrect attempts to enter the hard drive password and treats the hard drive as not available. The hard drive does not accept password unlock attempts after five incorrect attempts to enter the hard drive password from the BIOS Setup. The hard drive password must be reset for the new password unlock attempts. The computer treats the hard drive as not available when the Esc key is pressed at the hard drive password prompt. The hard drive password is not prompted when the computer resumes from standby mode. When the hard drive is unlocked by the user before the computer goes into standby mode, it remains unlocked after the computer resumes from standby mode. If the computer and hard drive passwords are set to the same value, the hard drive unlocks after the correct computer password is entered. Dell Technologies recommends using a hard drive password to protect unauthorized data access.
Password Configuration	The Password configuration page includes several options for changing the requirements of BIOS passwords. You can modify the minimum and maximum length of the passwords and require passwords to contain certain character classes (upper case, lower case, digit, special character). Dell Technologies recommends setting the minimum password length to at least eight characters. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Password Changes
Allow Non-Admin Password Changes	The Allow Non-Admin Password Changes option in BIOS setup allows an end user to set or change the computer or hard drive passwords without entering the administrator password. This gives an administrator control over the BIOS settings but enables an end user to provide their own password. By default, the Allow Non-Admin Password Changes option is disabled. For additional security, Dell Technologies recommends keeping the Allow Non-Admin Password Changes option disabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Admin Setup Lockout	The Admin Setup Lockout option prevents an end user from even viewing the BIOS setup configuration without first entering the administrator password (if set). By default, the Enable Admin Setup Lockout option is disabled. For additional security, Dell Technologies recommends keeping the Admin Setup Lockout option disabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Master Password Lockout
Enable Master Password Lockout	The Master Password Lockout setting allows you to disable the Recovery Password feature. If the computer, administrator, or hard drive password is forgotten, the computer becomes unusable. NOTE:When the owner password is set, the Master Password Lockout option is not available. NOTE: When an internal hard drive password is set, it must first be cleared before Master Password Lockout can be changed. By default, the Enable Master Password Lockout option is disabled. Dell Technologies does not recommend enabling the Master Password Lockout unless you have implemented your own password recovery computer. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Allow Non-Admin PSID Revert
Enable Allow Non-Admin PSID Revert	Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the Enable Allow Non-Admin PSID Revert option is disabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.

Table 10. System setup options—Update, Recovery menu
The following table describes the Update, Recovery menu options in the System setup program.
Update, Recovery
BIOS Downgrade
Allow BIOS Downgrade	Controls flashing of the computer firmware to previous revisions. By default, the Allow BIOS Downgrade option is enabled.

Table 11. System setup options—System Management menu
The following table describes the System Management menu options in the System setup program.
System Management
Service Tag	Displays the Service Tag of the computer.
Asset Tag	Creates a computer Asset Tag that can be used by an IT administrator to uniquely identify a particular computer. NOTE:Once set in BIOS, the Asset Tag cannot be changed.
AC Behavior
Wake on AC	Enables or disables the computer to turn on and go to boot when AC power is supplied to the computer. By default, the Wake on AC option is disabled.
First Power On Date
Set Ownership Date	Sets the ownership date or date of first power on for your computer. By default, the Set Ownership Date option is disabled.

Table 12. System setup options—Keyboard menu
The following table describes the Keyboard menu options in the System setup program.
Keyboard
Fn Lock Options	Enables or disables the Fn Lock option. By default, the Fn Lock option is enabled. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Lock Mode	By default, the Lock Mode Secondary option is enabled. With this option, the F1-F12 keys scan the code for their secondary functions. NOTE:To view this option, enable Advanced Setup mode as described in View Advanced Setup options.
Keyboard Illumination	Configures the operating mode of the keyboard illumination feature. By default, the Dim option is selected. Enables the keyboard illumination feature at 100% brightness level.
Keyboard Backlight Timeout on AC	Sets the timeout value for the keyboard backlight when an AC adapter is connected to the computer. By default, the 10 seconds option is selected.
Keyboard Backlight Timeout on Battery	Sets the timeout value for the keyboard backlight when the computer is running only on the battery power. The keyboard backlight timeout value is only effective when the backlight is enabled. By default, the 10 seconds option is selected.

Table 13. System setup options—Preboot Behavior menu
The following table describes the Preboot Behavior menu options in the System setup program.
Preboot Behavior
MAC Address Pass-Through	Replaces the external NIC MAC address (in a supported dock or dongle) with the selected MAC address from the computer. By default, the Passthrough MAC Address option is selected.
Sign of Life
Early Keyboard Backlight	Keyboard Backlight Sign of Life. By default, the Early Keyboard Backlight option is enabled.

Table 14. System setup options—System Logs menu
The following table describes the System Logs menu options in the System setup program.
System Logs
BIOS Event Log
Clear BIOS Event Log	Allows you to select option to keep or clear BIOS events logs. By default, the Keep Log option is selected.