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Note: If you want to use an external mouse, select Disabled .
• Trackpad
Values: Disabled, Enabled
Description: Enable or disable the built-in trackpad.
Note: If you want to use an external mouse, select Disabled .
• Fn and Ctrl Key swap
Values: Disabled , Enabled
Description: If you select Enabled , the Fn key works as the Ctrl key and the Ctrl key works as the Fn key.
• F1–F12 as Primary Function
Values: Disabled , Enabled
Description: If you select Enabled , pressing the function keys directly inputs F1–F12. If you select
Disabled , pressing the function keys directly initiates the special function printed as an icon on each
key. To temporarily switch the above two functions, press Fn+Esc.
• Fn Sticky key
Values: Disabled , Enabled
Description: If you select Enabled , you can press the Fn key (instead of press and hold) to keep it
in a pressed condition. Then press the function key you want. The action is equivalent to pressing
the function key simultaneously with the Fn key.
Display
• Boot Display Device
Values: ThinkPad LCD , USB Type-C, HDMI, Display on dock
Description: Select the display device that you want to activate at boot time. This selection is effective
for boot time, password prompt, and ThinkPad Setup.
USB Type-C corresponds to the USB Type-C
connector on your computer. HDMI corresponds to the HDMI connector on your computer. Display
on dock corresponds to the video connectors (such as the DisplayPort, DVI, or VGA connectors) on a
docking station. Boot screen is cloned to all displays on dock.
• Shared Display Priority
Values: HDMI, Display on dock
Description: Select the priority between shared display outputs. HDMI and Dock displays share a single
display output. This option selects the one that is prioritized.
• Total Graphics Memory
Values: 256 MB , 512 MB
Description: Allocate the total memory which Intel internal graphics shares.
Note: If you select 512 MB , the maximum usable memory might be reduced on the 32–bit operating
system.
• Boot Time Extension
Values: Disabled , 1 second, 2 seconds, 3 seconds, 5 seconds, 10 seconds
Description: During the boot process, the computer might not detect the external monitors that need
more time to get ready. Select how long you want to extend the boot process.
Power
• Intel (R) SpeedStep technology
Values: Disabled, Enabled
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T570 and P51s User Guide