If you right click the drive after RAID 1 setup on a mac, the drive displays itself as a generic thunderbolt drive in the finder. (Sort of like the explorer menu)
The way to change this easily on a mac is to right click the drive and paste the Thunderbolt duo Icon in the GUI box. This is more of a visual thing so I can keep track of my hard drives instead of remembering names.
For some reason this newer external drive does not have the updated icon zip file package available for download.
I found the following under support but not what I’m looking for: