Summary: I end up returning it and buy a QNAP TS 109 II, which have similar listed functions and actually works.
Pros: Nice packaging. The unit looks nice. It is similar to a Nintendo Wii. Hardware installation is easy.
Cons: BT download speed is very slow. Need a lot of work to make it really useful UPNP media sharing does not work. My xbox 360 is able to see the drive but not able to read any video file from it. I also read reviews from other people that it does not work well for media sharing.