This is what I use
http://www.newegg.com/Product/Produc...82E16855602107
You have to buy your own 2.5" HD
With this, you can
1) use this as an external HD when connect to you PC
2) backup photo from 12 different kind of memory card without PC.
3) Also this is a MP3 player.

I used this for my Italy trip. No PC. I also backup photo for my friend.