Dell 27 All-in-One EC27250 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 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
Dell 27 All-in-One EC27250
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.
Processor Information
Processor Type	Displays the processor type.
Maximum Clock Speed	Displays the maximum processor clock speed.
Core Count	Displays the number of cores on the processor.
Processor ID	Displays the processor identification code.
Processor L2 Cache	Displays the processor L2 Cache size.
Processor L3 Cache	Displays the processor L3 Cache size.
Microcode Version	Displays the microcode version.
Intel Hyper-Threading Capable	Displays whether the processor is Hyper-Threading (HT) capable.
Memory Information
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.
DIMM 1 size	Displays the total size of the DIMM 1 memory module.
DIMM 2 size	Displays the total size of the DIMM 2 memory module.
Devices Information
Panel Type	Displays the Panel Type of the computer.
Video Controller	Displays the video controller type of the computer.
Video Memory	Displays the video memory information 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.
LOC MAC Address	Displays the MAC address of the video pass-through.
dGPU Video Controller	Displays the dGPU video controller type of the computer.

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 Sequence	Displays the boot sequence. By default, the UEFI RST P0221 NVMe Phison 1024GB H5FGYSAPT36F0036 option is selected. By default, the ONBOARD NIC (IPV4) option is selected. By default, the ONBOARD NIC (IPV6) option is selected. By default, the UEFI HTTPs (MAC:20881078A4CD) option is selected.
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. NOTE:For Secure Boot to be enabled, the computer is required to be in UEFI boot mode and the Enable Legacy Option ROMs option is required to be turned off.
Enable Microsoft UEFI CA	Enables or disables the inclusion of UEFI CA in the BIOS UEFI Secure Boot DB Database. By default, the Enable Microsoft UEFI CA option is enabled.
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.
Custom Mode Key Management	Selects the custom values for expert key management. By default, the PK option is selected.

Table 3. System setup options—Integrated Devices menu
The following table describes the Integrated Devices menu options in the System setup program.
Integrated Devices
Date/Time
Date	Sets the computer date in MM/DD/YYYY format. Changes to the date format take effect immediately.
Time	Sets the computer time in HH/MM/SS 24-hour format. You can switch between a 12-hour and 24-hour clock. Changes to the time format take effect immediately.
Camera
Enable Camera	Enables the camera. By default, the Enable Camera option is enabled.
Audio
Enable Audio	Enables all integrated audio controller. By default, all the options are enabled.
Enable Microphone	Enables the microphone. By default, the Enable Microphone option is enabled.
Enable Internal Speaker	Enables the internal speaker. By default, the Enable Intenal Speaker option is enabled.
USB Configuration
Enable Rear USB Ports	Enables the rear USB ports. By default, the Enable Rear USB Ports option is enabled.
Enable Side USB Ports	Enables the side USB ports. By default, the Enable Side USB Ports option is enabled.
Enable USB Boot Support	Enables booting from USB mass storage devices that are connected to external USB ports. By default, the Enable USB Boot Support option is enabled.

Table 4. System setup options—Storage menu
The following table describes the Storage menu options in the System setup program.
Storage
SATA/NVMe Operation
SATA/NVMe Operation		Sets the operating mode of the integrated SATA hard drive controller. By default, the RAID On option is selected.
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.
SMART reporting
Enable SMART reporting		If S.M.A.R.T. (Self-monitoring, Analysis, and Reporting Technology) is enabled the BIOS can receive analytical information from integrated devices and send notifications during startup about possible failure of the device. By default, the option is disabled.
Drive Information		Displays the drive type and device name.

Table 5. System setup options—Display menu
The following table describes the Display menu options in the System setup program.
Display
Touchscreen		Enables or disables the touch screen option. By default, the Touchscreen option is enabled.
OSD Button Management
Disable OSD buttons		Disable the OSD (On-Screen Display) buttons on their All-in-One system. By default, the option is disabled.

Full Screen Logo		Enables or disables the computer to display a full-screen logo, if the image matches screen resolution. By default, the Full Screen Logo option is disabled.

Table 6. System setup options—Connection menu
The following table describes the Connection menu options in the System setup program.
Connection
Network Controller Configuration
Integrated NIC		Sets the on-board LAN controller. By default, the Enabled with PXE option is selected.
Wireless Device Enable
WLAN		Enables or disables the internal WLAN device. By default, the WLAN option is enabled.
Bluetooth		Enables or disables the internal Bluetooth device. By default, the Bluetooth option is enabled.
Enable UEFI Network Stack		Enables or disables the UEFI Network Stack and controls the onboard LAN Controller. By default, the Auto Enabled option is selected.
HTTP(s) Boot Feature
HTTP(s) Boot		Enables or disables the HTTP(s) boot capabilities. By default, the option is eabled.
HTTP(s) Boot Modes		Sets the Boot Mode. By default, the Auto Mode option is selected.

Table 7. System setup options—Power menu
The following table describes the Power menu options in the System setup program.
Power
USB PowerShare
Enable USB PowerShare	Enables or disables external devices (phones, portable music players) to be power or charged using system battery. By default, the option is disabled.
USB Wake Support
Enable USB Wake support	Enable or disable USB devices like a mouse or keyboard to wake the system from Standby, Hibernate, and Power Off. By default, the USB Wake Support option is disabled.
AC Behavior
AC Recovery	Set what the your system will do when power is restored after an unexpected loss of power. By default the Power OFF option is selected.
Block Sleep	Enables or disables the computer from entering Sleep (S3) mode in the operating system. By default, the Block Sleep option is disabled. NOTE:When enabled, the computer does not go to Sleep, Intel Rapid Start is disabled automatically, and the operating system power option is blank if it was set to Sleep.
Deep Sleep Control
Deep Sleep Control	Set how aggressive the system is at conserving power while in Shutdown (S5) or Hibernate (S4) mode. By default, the option is disabled.

Table 8. System setup options—Security menu
The following table describes the Security menu options in the System setup program.
Security
Intel Platform Trust Technology
Intel Platform Trust Technology	This option lets you control whether the Intel Platform Trust Technology (PTT) feature is visible to the operating system. NOTE:Disabling this option does not change any settings you have made to the PTT, nor does it delete or change any information or keys you may have stored in PTT. Changes to this setting take effect immediately.
PPI Bypass for Clear Commands	This option controls the TPM Physical Presence Interface (PPI). When enabled, this setting will allow OS to skip BIOS PPI user prompts when issuing the Clear command. When disabled, this setting will require user physical presence interaction to follow instruction from BIOS.
Clear	This setting clears the PTT owner information, and returns the PTT to the default state.
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.
Absolute	Absolute Software provides various cyber security solutions, some requiring software preloaded on Dell computers and integrated into the BIOS. To use these features, you must enable the Absolute BIOS setting and contact Absolute for configuration and activation. By default, the Absolute option is enabled. For additional security, Dell Technologies recommends keeping the Absolute option enabled. NOTE:When the Absolute features are activated, the Absolute integration cannot be disabled from the BIOS setup screen.
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.
Authenticated BIOS Interface
Enable Authenticated BIOS Interface	Enables or disables Authenticated BIOS Interface By default, the Authenticated BIOS Interface option is disabled.
Clear Certificate Store	Clears all certificates in KMS storage
Legacy Manageability Interface Access	This setting allows the platform administrator to control acces via the Legacy Manageability Interface when ABI is enabled and provisioned.
Firmware Device Tamper Detection	Allows you to control the firmware device tamper detection feature. This feature notifies the user when the firmware device is tampered. When enabled, a screen warning messages are displayed on the computer and a tamper detection event is logged in the BIOS Events log. The computer fails to reboot until the event is cleared. By default, the Silent option is enabled. For additional security, Dell Technologies recommends keeping the Silent 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 M.2 SSD Password can be set to prevent unauthorized access of the data stored on the M.2 SSD. The computer prompts for the hard drive password during boot in order to unlock the drive. A password-secured M.2 SSD 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 M.2 SSD Password is used - The M.2 SSD 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 M.2 SSD password prompt. The computer shuts down after three incorrect attempts to enter the M.2 SSD password and treats the M.2 SSD as not available. The M.2 SSD does not accept password unlock attempts after five incorrect attempts to enter the hard drive password from the BIOS Setup. The M.2 SSD password must be reset for the new password unlock attempts. The computer treats the M.2 SSD as not available when the Esc key is pressed at the hard drive password prompt. The M.2 SSD password is not prompted when the computer resumes from standby mode. When the M.2 SSD 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 M.2 SSD 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.
Password Bypass	The Password Bypass option allows the computer to reboot from the operating system without entering the computer or hard drive password. If the computer has already booted to the operating system, it is presumed that the user has already entered the correct computer or hard drive password. NOTE:This option does not remove the requirement to enter the password after shutting down. By default, the Password Bypass option is disabled.
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 option is disabled. For additional security, Dell Technologies recommends keeping the Allow Non-Admin Password Changes option enabled.
Admin Setup Lockout
Enable 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 Admin Setup Lockout option is disabled. For additional security, Dell Technologies recommends keeping the Admin Setup Lockout option disabled.
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 does not recommend enabling the Master Password Lockout unless you have implemented your own password recovery computer.
Allow Non-Admin PSID Revert	This option controls access to the Physical Security ID (PSID) revert of NVMe storage drives from the Dell Security Manager prompt. When disabled: If a BIOS Admin password is set, PSID revert is protected by the BIOS Admin password and the user will be promted to enter the BIOS Admin password before performing the revert. When enabled: PSID revert is allowed to proceed without providing the BIOS admin password. By default, the option is disabled.

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 Recovery from Hard Drive	Enables or disables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key. By default, the BIOS Recovery from Hard Drive option is enabled. NOTE:BIOS Recovery from Hard Drive is not available for self-encrypting drives (SED). NOTE:BIOS recovery is designed to fix the main BIOS block and cannot work if the Boot Block is damaged. In addition, this feature cannot work in the event of EC corruption, ME corruption, or a hardware issue. The recovery image must exist on an unencrypted partition on the drive.
BIOS Downgrade
Allow BIOS Downgrade	Controls flashing of the computer firmware to previous revisions. By default, the Allow BIOS Downgrade option is enabled.
SupportAssist OS Recovery	Enables or disables the boot flow for SupportAssist OS Recovery tool in the event of certain computer errors. By default, the SupportAssist OS Recovery option is enabled.
BIOSConnect	Enables or disables cloud Service operating system recovery if the main operating system fails to boot with the number of failures equal to or greater than the value specified by the Auto operating system Recovery Threshold setup option and local Service operating system does not boot or is not installed. By default, the BIOSConnect option is enabled.
Dell Auto OS Recovery Threshold	Allows you to control the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery Tool. By default, the Dell Auto OS Recovery Threshold value is set to 2.

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.
Wake on LAN/WLAN	Enables or disables the computer to turn on by a special LAN signal. By default, the Wake on LAN/WLAN option is disabled.
Auto On Time	Enable to set the computer to turn on automatically every day or on a preselected date and time. This option can be configured only if the Auto On Time is set to Everyday, Weekdays, or Selected Days. By default, the Auto On Time option is disabled.
First Power on Date
Set Ownership Date	This option lets you set the ownership date of your computer. By default, this option is enabled.
Diagnostics
OS agent Requests	This option enables or disables Dell OS Agent(s) to schedule onboard diagnostics. By default, this option is enabled.
Power-on-Self-Test Automatic Recovery
Power-on-Self-Test Automatic Recovery	This option enables or disables the BIOS to attempt an automatic recovery of the computer- such as reverting BIOS Setup configuration settings to BIOS. By default, this option is enabled.

Table 12. System setup options—Keyboard menu
The following table describes the Keyboard menu options in the System setup program.
Keyboard
Numlock LED
Enable Numlock LED	Enables or disables Numlock when the computer boots. By default, this option is enabled.

Table 13. System setup options—Preboot Behavior menu
The following table describes the Preboot Behavior menu options in the System setup program.
Preboot Behavior
Adapter Warnings
Enable Adapter Warnings	Enables the warning messages during boot when the adapters with less power capacity are detected. By default, the Enable Adapter Warnings option is enabled.
Warnings and Errors	Enables or disables the action to be taken when a warning or error is encountered. By default, the Prompt on Warnings and Errors option is selected. Stop, prompt, and wait for user input when warnings or errors are detected. NOTE:Errors deemed critical to the operation of the computer hardware stop the functioning of the computer.
Extend BIOS POST Time	Sets the BIOS POST (Power-On Self-Test) load time. By default, the 0 seconds option is selected.

Table 14. System setup options—Virtualization menu
The following table describes the Virtualization menu options in the System setup program.
Virtualization Support
DMA Protection
Enable Pre-Boot DMA Support	Allows you to control the Pre-Boot DMA protection for both internal and external ports. This option does not directly enable DMA protection in the operating system. NOTE:This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable Pre-Boot DMA Support option is enabled. For additional security, Dell Technologies recommends keeping the Enable Pre-Boot DMA Support option enabled. NOTE:This option is provided only for compatibility purposes, since some older hardware is not DMA capable.
Enable OS Kernel DMA Support	Allows you to control the Kernel DMA protection for both internal and external ports. This option does not directly enable DMA protection in the operating system. For operating systems that support DMA protection, this setting indicates to the operating system that the BIOS supports the feature. NOTE:This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable OS Kernel DMA Support option is enabled. NOTE:This option is provided only for compatibility purposes, since some older hardware is not DMA capable.
Internal Port DMA Compatibility Mode	When enabled, BIOS will notify the OS that the internal ports are not DMA capable.

Table 15. System setup options—Performance menu
The following table describes the Performance menu options in the System setup program.
Performance
Intel SpeedStep
Enable Intel SpeedStep Technology	Enables the computer to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production. By default, the Enable Intel SpeedStep Technology option is enabled.
Intel Hyper-Threading Technology
Enable Intel Hyper-Threading Technology	Enables the Intel Hyper-Threading mode of the processor. When enabled, the Intel Hyper-Threading increases the efficiency of the processor resources when multiple threads run on each core. By default, the Intel Hyper-Threading Technology option is enabled.

Table 16. 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.
Power Event Log
Clear Power Event Log	Allows you to select option to keep or clear Power events logs. By default, the Keep Log option is selected.