AAEON TKS-G21-QM77B - Manual (Page 54)

E m b e d d e d B o x T K S - G 2 1 - Q M 7 7 B
Intel TXT ( LT ) Configuration
Options summary: (default setting)
Disabled Intel TXT(LT) Support
Enabled
En/Disable Intel TXT function. This function only can be
enabled/disabled if SMX, VT-x and VT-d support are enabled prior to
it.
Chapter 3 AMI BIOS Setup 3-17