Lenovo ThinkPad X1 User Manual page 60

Description: Enable or disable a feature that turns on the computer when the ac power adapter is
attached.
• Disable Built-in Battery
Values: Yes, No
Description: Temporary disable the built-in battery for servicing the system. After selecting this item, the
system will be automatically powered off, then ready to be serviced.
Note: The built-in battery will be automatically enabled when the ac power adapter is reconnected.
Beep and Alarm
• Password Beep
Values: Off, On
Description: 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.
Thunderbolt(TM) 3
• Security level
Values: No Security, User Authorization, Secure Connect, Display Port and USB
Description: Select the security level:
– No Security: Allow Thunderbolt devices to be connected automatically.
– User Authorization: Allow Thunderbolt devices to be connected after 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: Off, On
Description: 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: On, Off
Description: 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.
Debug Port
Values: Off, On
Description: If you select On, the audio connector for headphones or headset is used as a serial debug port
and the default function of this connector does not work. Do not connect headphones or a headset to the
computer.
Note: You need the Audio-Serial Debug Cable to connect the computer and other systems.
Intel AMT
• Intel (R) AMT Control
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