I give this drive five stars for its size - its physical dimensions - because although I have the same quibbles about it as I do with all other external drives, its size is smaller than other 2.5" external hard drives I've seen, including the 1.5TB Seagate that I own.In the 2.5" hard drive world - the drives that can run on just USB power - there are internal drives that you can pair with an external case and there are external drives that come in a case and with software - usually a Graphical User Interface (GUI) to help the layman back things up.  Unlike the 3.5" hard drive world, capacities are larger earlier in the external devices, but somehow the casing and enclosed bridge (in this case SATA to USB) make the physical size larger than an internal drive with case.  This one is still a little bigger, but really quite small.  It's awesome, frankly.  To have that much capacity in something you can store just about anywhere and you don't even have to mess around with a power cord.What I don't like - and I complain about this with all external hard drives - is the included software that they want you to install to do backups, etc.  As an advanced computer user, I think it's nonsense; even my mother should be able to use the drive without any software.  Of course you don't have to use it.  The thing that annoys me is that the drive - again, like all other externals nowadays - comes with a sleep timer set, in this case at 30 minutes, so I have to install the interface software to turn that off (necessary for my intended application), and then uninstall the software to get it off my system, but all software leaves a trace after its removal.If this is your first USB 3.0 peripheral, be aware that the port on the drive is unlike any USB 2.0 port, and thus will require a different cable if you need one longer than the included ~1m cable.  More industry stupidity, so they can overcharge for the first year or so.  Look for a cheap one on Amazon so you don't have to run out to Best Buy and pay 10x too much.  Interface cables are the one thing I believe in buying as cheap as possible - and thank God for Amazon in that respect.One more note in response to another review:  prices on non-solid state hard drives have been fluctuating a lot recently because of the Thai floods, and prices of electronics on Amazon always fluctuate.  I typically check all prices before buying anything, but still end up buying from Amazon 99% of the time.  I haven't seen Best Buy have a real deal in years.  They make their money off lies that their employees tell you, either because they have been brainwashed in to believing said lies or because of commission.  Do your own price comparison when the time comes to make a purchase.The only thing I don't love about this drive is an industry problem that's not going away any time soon, and I have to just stop complaining about it (later).  I give this a higher than average review because I was actually surprised - and impressed - with the physical size. 

Question: Does this provide enough storage?
Answer: capacities are larger