When my old computer was dying it was recommended that I look into this "Passport" for large backup, rather than use multiple ("thumb") flash drives. So, when I was at the store to look at a new computer, I did purchase this. One of the selling points for me was that the storage is equal to that of the computer, so there would definitely be enough space to hold all necessary going forward.
I'd never used one and found it far more confusing than a flash drive. It gave directions to register, download a program, and set up scheduled download times. This took quite some time. I then wasn't sure I was properly giving instructions to back up the folders I needed to hold for transfer to new computer. I had to leave it run for hours; and when I re-checked it seemed to be done. It cited the amount of space used, but no indication that all my transfers had been successful. I didn't like the "lack of communication." This is often the case today when someone does not have previous familiarity with task at hand. An online instruction guide was available, but having to go back and forth, scrolling to the correct page for instructions then returning to processing screen was very tiresome and confusing. Not feeling at all secure, I decided to do some transfers to my regular flash drives as well, but I ran out of time, as my installation was scheduled to begin. After I transferred everything from the Passport to the new computer, I found that some important folders had NOT transferred. I don't know why -- very possibly my own error, since I didn't understand what I was doing. Fortunately, I'd kept my not-quite-dead old computer handy, hooked that back up, and did another transfer to flash drives, and successfully downloaded the missing files....well, most of them: for some reason Dropbox would not transfer and I had to put it onto my desktop instead. With all the confusion, I probably wouldn't know how to succeed any better a second time. Good and bad at same time, I was later told that I hadn't needed to go through the registration and other steps I took, that they can just be done without all that. How can one know that without instructions to the effect? At present, after receiving help, it is continuously on and plugged in, and it is supposedly downloading info daily when computer is not in use. I hope this is true! Again, someone who already had familiarity with such a device might happily attach it and see successes. I'm not in that position. And I don't know how to test to see if the daily backup is taking place. So, for those in similar positions to me in terms of experience, I'd say this might be a good device, but get good instructions prior to purchasing and depending on it. For those more savvy, perhaps it is a good buy without caveats. Including my sharing of all concerns and the ensuing recommendations, I'll state that I'd recommend this in hopes someone else can feel better prepared for success. But for those in my position, I might not actually recommend it.