m16 R2, BIOS storage setting when adding 2nd SSD

I've got an Alienware m16 R2 laptop. It came with one SSD drive with Windows 10 Home installed. I plan on adding a second SSD drive to store user files. 

My laptop shipped with the BIOS storage "SATA/NVMe Operation" setting set to "RAID On". I read online that other people (but with older Dell laptops) changed their setting to "AHCI/NVMe". I checked with Dell technical support and they said that even though I plan to use my 2nd SSD independently of the 1st SSD (i.e. I won't be using RAID 1 or anything), I could leave the BIOS setting to "RAID On". Is this the setting that others with this same laptop but 2 SSDs use?