> SSD drive that is soldered to the motherboard of your MacBook Air/High-End Notebook/Chromebook 

Nitpick of something I hear a lot: No SSD is soldered on in a MacBook Air or any Chromebook I've seen[1]. You may need an unusual screwdriver (MBA – maybe worse for a Chromebook) to get the bottom cover off, but then it's just a single screw. The PCs I've seen are similar, but I don't have as much experience there.

I assume the confusion started because the RAM is soldered.

[1] You can see internal pictures at chromium.org, e.g. http://www.chromium.org/chromium-os/developer-information-fo...