Lenovo ThinkPad X1 Carbon 20KG User Manual page 82

Note: The built-in battery will be automatically enabled when the ac power adapter is reconnected.
Beep and Alarm
• Password Beep
Values: Disabled, Enabled
Descriptions: Enable or disable a beep when the computer is waiting for a power-on, hard disk, or
supervisor password. Different beeps remind you that the password you entered is right or wrong.
• Keyboard Beep
Values: Disabled, Enabled
Descriptions: Enable or disable a beep when unmanageable key combinations are pressed.
Thunderbolt(TM) 3
• Wake by Thunderbolt(TM) 3
Values: Disabled, Enabled
Descriptions: Enable or disable Wake Feature with Thunderbolt 3 Port. If you select Enabled, the battery
life during the low power status might become shorter.
• Security level
Values (for Windows 7 64-bit and Windows 10): No Security, User Authorization, Secure Connect,
Display Port and USB
Values (for Windows 7 32-bit): No Security, User Authorization, Secure Connect, Display Port and USB
Note: Do not change the default settings on the Windows 7 32-bit operating system. Otherwise the
computer might not start.
Descriptions: Select the security level:
– No Security: Allow Thunderbolt devices to be connected automatically.
– User Authorization: Allow Thunderbolt devices to be connected after the user authorization.
– Secure Connect: Allow Thunderbolt devices to be connected with a saved key that has been
approved by the user.
– Display Port and USB: Allow only DisplayPort-compatible devices and USB devices to be connected.
Thunderbolt devices are not allowed to be connected.
• Support in Pre Boot Environment
– Thunderbolt(TM) device
Values: Disabled, Enabled
Descriptions: Enable or disable pre-OS support for Thunderbolt devices attached to the Thunderbolt 3
port. To use a device in the pre-boot environment, authorize it in the operating system or set the
Security level to No Security. To boot from a device, configure it by selecting Startup ➙ Boot.
– USB device
Values: Disabled, Enabled
Descriptions: Enable or disable pre-OS support for USB devices attached to the Thunderbolt 3 port. To
boot from a device, configure it by selecting Startup ➙ Boot.
Intel AMT
• Intel (R) AMT Control
Values: Disabled, Enabled, Permanently Disabled
64
User Guide