I was using my DIR-685 as a sharing storage from my laptop and my android. With Server Message Block feature of its storage router I can access my attached hard drive from my laptop without special tool, and I used ES File Explorer File Manager from my Android.
Now I put my calibre library in DIR-685, and I wonder, can Calibre Companion access my library directly without content server like Calibre Library, so I don't have to turn on my laptop ?