Just posting this for general information in case it may help others in the same situation. I needed a fast high capacity external SSD for my new 2018 Mini for storing and editing a very large number of digital images. I was looking at the Samsung X5. The Samsung X5 2TB Version is currently selling for around $1,200.00 down from $1,400.00 but still very pricey. So after doing a little research online I found it possible to upgrade the internal NVMe M.2 SSD. So I bought the 500GB version of the X5 for $300.00 and replaced the SSD with a 970 EVO 2TB ($540.00). I was able to sell the new original 500GB NVMe SSD for $100.00. So I ended up with a 2TB X5 for a total cost of $740.00. A substantial savings of $460.00. The SSD swap was very simple and took maybe 15 minutes.