Dell OptiPlex 5055 Small Form Factor Owner's Manual

System Setup options

NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not appear.

Table 1. General. The following table describes the general information about the computer:
Option	Description
System Information	Displays the following information: System Information: Displays BIOS Version, Service Tag, Asset Tag, Ownership Tag, Ownership Date, Manufacture Date, Express Service Code and the Singed Firmware Update. Memory Information: Displays Memory Installed, Memory Available, Memory Speed, Memory Channel Mode, Memory Technology, DIMM 1 Size, DIMM 2 Size, DIMM 3 Size and DIMM 4 Size . PCI Information: Displays SLOT1_M.2, SLOT2_M.2 Processor Information: Displays Processor Type, Core Count, Current Clock Speed, Minimum Clock Speed, Maximum Clock Speed, Processor L2 Cache, Processor L3 Cache, HT Capable, and 64-Bit Technology. Device Information: Displays LOM MAC Address, Video Controller, Audio Controller .
Boot Sequence	Boot Mode Boot List option: Legacy UEFI (Default) Enable Boot Devices Boot Sequence Add Boot Option Remove Boot Option View Boot Option
Advanced Boot Options	Allows you to select the Enable Legacy Option ROMs option. By default, this option is selected. Enabled(selected by default) Disabled
BIOS Setup Advanced Mode	Allows you to select BIOS Setup Advanced Mode. By default, this option is selected. Enabled(selected by default) Disabled
Date/Time	Allows you to set the date and time settings. Changes to the system date and time take effect immediately.

Table 2. System Configuration. The following table describes the system configuration:
Option	Description
Integrated NIC	Allows you to control the on-board LAN controller. The option ‘Enable UEFI Network Stack’ is not selected by default. The options are: Disabled Enabled Enabled w/PXE (default) NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not appear.
Serial Port	The options are: COM1 (Enabled by default) COM2 (Disabled by default) COM3 (Disabled by default) COM4 (Disabled by default)
SATA Operation	Allows you to configure the operating mode of the integrated hard drive controller. Disabled = The SATA controllers are hidden AHCI (Enabled by default) RAID ON = SATA is configured to support RAID mode (Disabled by default)
Drives	Allows you to enable or disable the various drives on-board: SATA-0 (enabled by default) SATA-1 SATA-2 SATA-3 M.2 PCIe SSD-0
Smart Reporting	This field controls whether hard drive errors for integrated drives are reported during system startup. The Enable Smart Reporting option is disabled by default.
USB Configuration	Allows you to enable or disable the integrated USB controller for: Enable Boot Support Enable Front USB Ports Enable Rear USB Ports All the options are enabled by default.
USB PowerShare	This option allows you to charge the external devices, such as mobile phones, music player. This option is disabled by default.
Audio	Allows you to enable or disable the integrated audio controller. The option Enable Audio is selected by default. Enable Microphone Enable Audio Enable Internal Speaker The options are selected by default.
Miscellaneous Devices	Allows you to enable or disable the Miscellaneous Devices. The option are Enable Secure Digital (SD) Card (Enabled by default) Secure Digital (SD) Card Read-Only mode

Table 3. Video. The following table describes the information about the computer’s video:
Option	Description
Multi-Display	The option is selected by default.
Primary Display	Allows you to select the primary display when multiple controllers are available in the system. Auto (default) Integrated Graphics NOTE: If you do not select Auto, the on-board graphics device will be present and enabled.

Table 4. Security. The following table describes the information about the computer’s security:
Option	Description
Admin Password	Allows you to set, change, and delete the admin password.
System Password	Allows you to set, change, and delete the system password.
Internal HDD-0 Password	Allows you to set, change, and delete the computer’s internal HDD.
Internal HDD-1 Password	Allows you to set, change, and delete the computer’s internal HDD.
Internal HDD-2 Password	Allows you to set, change, and delete the computer’s internal HDD.
Strong Password	This option lets you enable or disable strong passwords for the system.
Password Configuration	Allows you to control the minimum and maximum number of characters allowed for a administrative password and the system password. The range of characters is between 4 and 32.
Password Change	This option lets you determine whether changes to the System and Hard Disk passwords are permitted when an administrator password is set. Allow Non-Admin Password Changes - This option is enabled by default.
UEFI Capsule Firmware Updates	This option controls whether this system allows BIOS updates via UEFI capsule update packages. This option is selected by default. Disabling this option will block BIOS updates from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS)
TPM 2.0 Security	Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating system. TPM On (default) PPI Bypass for Enable Commands PPI Bypass for Disable Commands PPI Bypass for Clear Commands Attestation Enable (default) Key Storage Enable (default) SHA-256 (default) Clear TPM State Disable Enable (default)
Computrace	This field lets you Activate or Disable the BIOS module interface of the optional Computrace Service from Absolute Software. Enables or disables the optional Computrace service designed for asset management. Deactivate - This option is selected by default. Disable Activate
Chassis Intrusion	The options are: Disable (default) Enable On-Silent
Admin Setup Lockout	Allows you to enable or disable the option to enter Setup when an Administrative password is set. This option is not set by default.

Table 5. Secure Boot. The following table describes the information about the computer’s secure boot:
Option	Description
Secure Boot Enable	Allows you to enable or disable Secure Boot feature Disable (selected by default) Enable
Expert key Management	Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom Mode option is disabled by default. The options are: PK (default) KEK db dbx If you enable the Custom Mode, the relevant options for PK, KEK, db, and dbx appear. The options are: Save to File - Saves the key to a user-selected file Replace from File - Replaces the current key with a key from a user-selected file Append from File - Adds a key to the current database from a user-selected file Delete- Deletes the selected key Reset All Keys - Resets to default setting Delete All Key s- Deletes all the keys NOTE: If you disable the Custom Mode, all the changes made will be erased and the keys will restore to default settings.

Table 6. Performance. The following table describes the information about the computer’s processor:
Option	Description
C States Control	Allows you to enable or disable additional processor sleep states. This option is enabled by default.
AMD TurboCore Technology	This options is disable by default.

Table 7. Power Management. The following table describes the information about the computer’s power management:
Option	Description
AC Recovery	Determines how the system responds when AC power is re-applied after a power loss. You can set the AC Recovery to: Power Off Power On Last Power State This option is Power Off by default.
Auto On Time	Sets time to automatically turn on the computer. Time is kept in standard 12-hour format (hour:minutes:seconds). Change the startup time by typing the values in the time and AM/PM fields. NOTE: This feature does not work if you turn off your computer using the switch on a power strip or surge protector or if Auto Power is set to disabled .
Deep Sleep Control	Allows you to define the controls when Deep Sleep is enabled. Disabled Enabled in S5 only Enabled in S4 and S5 This option is Enabled in S4 and S5 by default.
Fan Control Override	Allows you to determine the speed of the system fan. When this option is enabled, the system fan runs at the maximum speed. This option is disabled by default.
USB Wake Support	Allows you to enable the USB devices to wake the computer from standby mode. The option "Enable USB Wake Support" is selected by default
Wake on LAN/WWAN	This option allows the computer to power up from the off state when triggered by a special LAN signal. This feature only works when the computer is connected to AC power supply. Disabled - Does not allows the system to power on by special LAN signals when it receives a wake-up signal from the LAN or wireless LAN. LAN - Allows the system to be powered on by special LAN signals. WLAN Only - Allows the system to be powered on by special WLAN signals. LAN or WLAN- Allows the system to be powered on by special LAN signals or WLAN signals. LAN with PXE Boot - A wakeup packet sent to the system in either the S4 or S5 state, that will cause the system to wake-up and immediately boot to PXE. This option is Disabled by default.
Block Sleep	Allows you to block entering to sleep (S3 state) in OS environment. This option is disabled by default.

Table 8. POST Behavior. The following table describes the information about the computer’s post behavior:
Option	Description
Numlock LED	Allows you to enable or disable the Numlock feature when your computer starts. This option is enabled by default.
Keyboard Errors	Allows you to enable or disable the keyboard error reporting when the computer starts. This option is enabled by default.
Warnings and Errors	This option can speed up the boot process by bypassing some compatibility steps: Prompt on Warnings and Errors (enabled by default) Continue on Warnings Continue on Warnings and Errors
Extend BIOS POST Time	The options are: 0 seconds (default) 5 seconds 10 seconds
Full Screen Logo	This options is disabled by default.

Table 9. Virtualization Support . The following table describes the information about the computer’s virtualization support:
Option	Description
AMD-V Technology	This option is enabled by default.
AMD-VI Technology	This option is enabled by default.

Table 10. Maintenance. The following table describes the information about the computer’s maintenance:
Option	Description
Service Tag	Displays the Service Tag of your computer.
Asset Tag	Allows you to create a system asset tag if an asset tag is not already set. This option is set by default.
SERR Messages	Controls the SERR message mechanism. This option is set by default. Some graphics cards require that the SERR message mechanism be disabled.
Dell Development Configuration	This options is disabled by default.
BIOS Downgrade	Allows you to control flashing of the system firmware to the previous versions. This option is enabled by default. NOTE: If this option is not selected, the flashing of the system firmware to the previous versions is blocked.
Data Wipe	Allows you to securely erase the data from all the available internal storages, such as HDD, SSD, mSATA, and eMMC. The option Wipe on Next Boot is disabled by default.
BIOS recovery	Allows you to recover the corrupted BIOS conditions from the recovery files on the primary hard drive. The option BIOS Recovery from Hard Drive is selected by default

Table 11. System Logs. The following table describes the information about the computer’s logs:
Option	Description
BIOS Events	Displays the system event log and allows you to: Clear Log Mark all Entries

Table 12. SupportAssist System Resolution . The following table describes supportassist information:
Option	Description
Auto OS Recovery Threshold	Options are: OFF, 1, 2 (default), 3.