For your purposes in using the mSATA SSD for an OS or data storage you can leave the BIOS SATA mode as AHCI.
You would typically switch the BIOS SATA mode to RAID when setting up a cache drive.
For your purposes in using the mSATA SSD for an OS or data storage you can leave the BIOS SATA mode as AHCI.
You would typically switch the BIOS SATA mode to RAID when setting up a cache drive.