MSI MS-9A08 - Manual (Page 62)

4-14
BIOS SETUP
▍
MPS Configuration
MPS Revision
This field allows you to select which MPS (Multi-Processor Specification)
version to be used for the operating system. You need to select the MPS
version supported by your operating system. To find out which version to
use, consult the vendor of your operating system.
USB Configuration
▶
▶
▶