Hi [NAME] welcome to this free user to user Alienware laptop discussion forum. This is not Dell Support.  Intel recommends keeping the BIOS RAID option, because it also includes single OS(C:) boot drives.  Clone (copy) the Windows OS(C:) RAID boot drive to a single boot drive using Macrium Reflect Free is the usual process. Macrium Software | Reflect Free Edition Check that the new single boot drive partition format is GPT so that BIOS boot list option UEFI can be enabled. Clone (copy) does not change the original RAID drives, should there be problems.  You will need an external USB drive enclosure for your 970 EVO Plus PCIe Gen3.0 NVMe M.2 SSD 2TB.  How to clone your PC hard drive using Macrium Reflect | Windows Central 
So, I just got the Samsung 970 Evo Plus 2TB SSD and trying to figure out how to clone my Windows OS system onto the new SSD card. I have a Raid 0 configuration in my Alienware Area 51m R1 gaming laptop right now, so both of my SSD slots inside are taken up (they are 2x 256 PCIe SSD). Do I need to use specific computer software and/or do I need to buy a drive enclosure to do this?? If so, which drive enclosure would be best? I've never cloned or imaged before so I'm very new to this. I've tried to learn on my own but I'm just super confused because most tutorials show how to use software with both SSD cards installed. I also don't know a lot of technical terminology. Thank you for the help!
Area-51m R1, cloning Raid 0 SSDs to single SSD?