Date/Time menuNote: The BIOS menu items might change without notice. Depending on the model, the default value mightvary.• System DateDescription: Set or change the date of the system.• System TimeDescription: Set or change the time of the system.Security menuNote: The BIOS menu items might change without notice. Depending on the model, the default value mightvary.Password• Supervisor PasswordValues: Disabled, EnabledDescriptions: Set a supervisor password to prevent unauthorized users from changing the startupsequence, network-related settings, and system date and time. For more information, see “Passwordsintroduction” on page 37.• Lock UEFI BIOS SettingsValues: Disabled, EnabledDescriptions: Enable this option to prevent unauthorized users from changing any settings in ThinkPadSetup. To use this function, a supervisor password is required.• Password at Unattended BootValues: Disabled, EnabledDescriptions: When this option is enabled, a password prompt is displayed when the computer is turnedon by an unattended event, such as a Wake on LAN attempt. To prevent unauthorized access, set theuser authentication on the operating system.• Password at RestartValues: Disabled, EnabledDescriptions: When this option is enabled, a password prompt is displayed when you restart thecomputer. To prevent unauthorized access, set the user authentication on the operating system.• Password at Boot Device ListValues: Disabled, EnabledDescriptions: If you enable this option, the supervisor password is required when you try to enter the Bootmenu by repeatedly pressing F12. To use this function, a supervisor password must be set.• Password Count Exceeded ErrorValues: Disabled, EnabledDescriptions: Enable this option to display the POST 0199 error message when you enter a wrongsupervisor password more than three times.• Set Minimum LengthValues: Disabled, x characters (4 ≤ x ≤ 12)Descriptions: Specify a minimum length for power-on passwords and hard disk passwords. If a supervisorpassword is set, you cannot change the minimum length until you log in as a supervisor.• Power-On PasswordValues: Disabled, Enabled54 E475 User Guide