2013 Retina SSD in a 2014 Air?

[Mac.User]

I have a 512GB SSD in my retina and I don't use all the space, can I swap it with the 128GB in my Air that I use more often?

My retina has more turned into a desktop/minecraft as of late and all the files are saved to an external RAID.

 

[Weaselboy]

Sorry... but nope that won't work. They use a different interface.