Noise - none except when the drive spins up which is a slight "whirrr".
Brand - the case does not open, unless I break it which I'm not about to do.
Inside - See Brand.
Heat - slightly warm to the touch, nothing to worry about.
Without app - I didn't use the app since it didn't work.
Disk format - CIFS
USB - used just to expand with more drives
It's an easy setup, I had it up and running in about 5 mins after plugging it in. Windows is even easier, probably like half that time
Review updated to reflect your questions.