Transfer data from old ssd to new macbook
I had water damage to my macbook air (13" and bought new in 2015), I took it to the Apple Shop in London and they said repairs would almost be as much as a new macbook, so I decided to get a new one. However they took out the SSD (at least thats what I think it's called) which they said contained all my files from my old macbook. But I'm not sure how to transfer that information to my new macbook? What kind of transfer device do I need to buy?
Thank you
MacBook Air