I have long reflected before buying my personal cloud. I'm not an expert at all in computer science. I was able to connect my PC to the cloud quickly and easily copy the files I wanted it. By cons, no instructions. Everything happens online, with no easy to understand for novices words, and no explanation. Ex: I'm still not arrived to install the "ftp" connection that would allow me, to me it seems, to me when I log out of my house. Copying files is quite slow (I use my cloud to copy photo files taken in RAW, so heavy in kilobytes). It is because of these last two points I put the note 4.