Lenovo ThinkPad T420si User Manual page 159

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, UEFI BIOS -
( flashed )
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Clear Security Chip
Intel TXT Feature
Flash BIOS Updating by End-
Users
Flash Over LAN
Execution Prevention
Intel Virtualization
Technology
Intel VT-d Feature
Ethernet LAN
UEFI BIOS Update Option
Memory Protection
Virtualization
I/O Port Access