I just bought the optane, and it needs to see you drive on the side of connection and that drive apparently needs to be the boot drive.
Unfortunately my SSD boot drive is in a special slot in an eight Asus prime X299 deluxe, so it's not seen as a stat drive.
Nonetheless I doubt the optane would be a benefit to an existing SSD drive and I wanted to see other drives I have in my system and they help them speed up.
so this might be good if you have a typical hard drive as a boot drive on the sata connection, but I don't really see how it's going to talk to other drives in my system and help speed