Dell pro support finally stated this is normal behavior for the Nvme in this system.  Answers to your questions: You can close this out since it was stated that this is normal.  Thanks for your assistance.
I have a new Dell Precision 3660, and the HDD light on the front blinks constantly.This is the 2nd one with the same behavior.  Dell support does not have an answer.  Even after booting it out of the box, and doing nothing, it will blink constantly.  It has a 2TB NVme drive.  I know these drives have a finite number or read/writes, so this concerns me. I then went ahead and ran all windows and dell firmware updates.  Even after completion, still the light is blinking. Task manager shows 0% disk usage, but the light is still blinking. Any feedback is appreciated!
Dell Precision 3660 hard drive light blinks continuously