Originally this machine had Intel SSD 600p Series - 256GB, M.2 80mm PCIe 3.0 x4, 3D1, TLC. This exact drive: https://ark.intel.com/content/www/us/en ... 1-tlc.html
So after doing a fresh install of Win10Pro on a new drive(Crucial P5 1TB) I needed to copy some of the files from the old drive.
For that I bought M.2 NVME SSD Enclosure Adapter: https://www.amazon.com/SSK-Aluminum-Enc ... B07MNFH1PX . Plunged in the Old drive in it and connected it to USB port on my t460s.
Old Drive is not recognized

Took the old drive out of USB enclosure and replaced the new drive with it to see if the computer will boot with the old drive in it. NO PROBLEM at ALL. Laptop boots and works flawlessly with the old drive in it.
I put the new Drive in SSD Enclosure Adapter and copied files that I needed onto it, again with no problems.
I called Intel Support twice and spent about 45 minutes, each time, with them trying to come up with solution. Both times the conversation concluded with an assumption that Enclosure Adapter is not working properly with an old SSD drive.
I asked several times which adapter would work, and no cigar, the would not budge. Simply saying the can not recommend any other company as a product maker. So at lost here.... All I was pointed to was: https://www.intel.com/content/www/us/en ... orage.html
I was wondering if anybody that had to upgrade the drive in t460s and was able to find a suitable M.2 NVME SSD Enclosure Adapter.
p.s. I also tried the old drive in this enclosure on other machines via USB with no luck. also upgraded BIOS to the latest version on a t460s.
Thank You.