It can turn your hard disk to wireless by wifi connection. You can read your hard disk via phone, ipad and notebook. Download the app and share your hard disk data by wireless
System Support Window, iOS and Android..

Note this is not a hard disk, but this can make your hard disk wireless, you can avoid to use cable to connect your hard disk that is trouble every time when you need to access the hard disk.. 

It helps to resolve troubles..
1) when you access hard disk, don't need any USB cables, as it is wireless now!
2) you may use Google drive, but it only 15G, enough? also it is blocked in China. 
3) in the market, basic model for my Cloud price starts from USd150 or more, but use this, plus any hard disk you had, it works as a personal cloud !