Calling the Thecus N5550 a NAS is almost selling it short, because it's much more than that. It's a network server for at home or in the office, and you can use it to download files, as a digital photo album, and for connecting IP cameras. You can connect it to a computer obviously, but also tablets and smartphones let you access it via apps.
Business software left the office and moved into the home long ago. If you've ever lost the password to Word, ZIP or PDF file in misguided attempt to protect data from prying eyes, this guide to Decrypting Document and File Passwords is a life saver. PCSTATS Tips