A friend just gave me an external USB HDD he wasn't using, a Buffalo HD with a 250GB Sata disc in it.
I thought I had better plug it in and test it before I can put a 500GB drive in it for another external back up.
I'm glad I tested it first, as it made a loud pop and let all the magic smoke out when I turned it on. 
Had I been using it as my only photo storage drive, there is a high chance I would have just lost everything. 
Fortunatly I lost nothing, but.....



