So I've been looking for such adapter for over a year and two companies have replied. said there isn't any and there's no one that wants to produce any either. Apparently it defies speed purpose. This is the message I got from a renown manufacturer of adapters.
Thanks a lot for getting back to us.
Actually, there don’t exist any manufacture that makes IC for PCI-e NVME to USB until now.
So I’m sorry that there is not much we can do.
What we now have is AHCI PCI-e.
Pete
Do not hesitate to call this number +886 2-7736-0128 #567
For well communication!
Français and Mandarin available
Pete (Marketing & Sales dep)
Direct: +886 2-7736-0128
Mail: pete@bplus.com.tw
So the only left to do is clone it and reinstall the clone in your system or get tunderbolt2 or 3 but they already come loaded with PCI-e NVME SSD's and you can't get them without them. I will post if I hear but I'm giving up. I'll keep it as spare in case my new replacement gets full or crashes.