Very handy inexpensive file dumping ground
I use my external Western Digital USB hard drive to store all of my .jpg files and the backup files for my desktop and laptop. In fact, I recently deleted some .jpg files from my internal hard drive by mistake and couldn't get them back using PC Inspector Smart Recovery so I just restored my hard drive using the Acronis True Image backup. It worked like a charm.
It was a great investment for the $50 cost.