In the controller System Controls page, the System Configuration menu, there has a feature called 'Host Interface Mode'. Set this option to “NVMe Mode”.

 Note: Motherboard should set to "UEFI Boot" or "Dual Boot" in NVMe Mode so you can get to the McBIOS setup utility through "UEFI Areca OS" from the Boot List.

You can use the new “NVMe Mode” even if RAID adapters connect SAS/SATA SSDs or even rotating hard disks in your RAID.