We have 1 desktop and 3 laptops in our home cataloguing years of work and memories. Our 500 MB external HD was no longer up to the task of backing up that many computers plus all the pictures and videos take up a LOT of space. We got the western digital hd at SAMs for a good deal. Installation was problematic on my desktop for some reason. It did work on my one laptop, so I've had to transfer everything from the other 2 laptops and the desk top to my old external HD, plug it and the WD into my new laptop and transfer to the WD that way. Not exactly an easy or simple solution. Pros: size, ability to turn power off Cons: installation (plug and play is preferrable), not easy to use My conclusion is this HD serves it's purpose but is not one that I'm likely to buy again.