SSD not upgradable per Asus

I just purchased this computer due to the fact that Asus had responded to a question in the question and answer section for this product here on amazon. The question was "is the ssd upgradeable". The Asus employee stated that a M.2 drive had to be purchased. So based on this, I purchased a 256 gig M.2 drive. I pulled the back cover and saw an empty M.2 slot. I secured the drive. once I powered up, it did not recognize the drive. I had purchased an external enclosure so I could copy the drive.. I went ahead and pugged the drive into the usb port and it was recognized!! Since I knew the drive was good, I called Asus. After the rep did some research, I was told that this model was not upgradable!! I noticed that a couple of reviewers stated that they were able to upgrade successfully upgrade.. it looks like they may have changed the specs.. my computer was manufactured on February 2019.

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