Chosen Solution

My laptop has that type of storage and I was just wondering. @mayer or @danj

No Apple uses a custom slot design. Apple was in fact the first to offer a blade SSD in a production system. Apple has also used different physical interfaces across the systems over the years. Here’s an example of a few:

One also needs to review the drive Phy and onboard logic. Heres a view of this aspect:

Even this has been eclipsed in performance! Apple is now using a Raw flash which is interleaved in the new iMac Pro!