Tech ARP has updated their BIOS Optimization Guide with an ACPI 2.0 Support section
We have just posted the ACPI 2.0 Support BIOS feature today. This brings the BIOS Optimization Guide to more than 365 BIOS features.ACPI 2.0 Support added in BIOS Optimization Guide
"While ACPI 2.0 Support hints that it's a toggle to enable ACPI 2.0 features, this is not the case. Enabling this BIOS feature does not turn on ACPI 2.0, while disabling it turns on the original..."
