ASROCK E3C224-V4L User Manual page 69

CpU C7 State Support
Use this to enable or disable CPU C7 (ACPI C3) report to OS.
package C State Support
Selected option will program into C State package limit register.
The default value is [Auto].
Intel tXt(Lt) Support
Use this option to enable or disable Intel(R) TXT(LT) support. The
default value is [Disabled].
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