Bought it with a TeckNet USB 3.0 PCI Express Interface USB 3.0 Dual Expansion Card (Molex Splitter NOT included)
for backing up my PC. First impressions are very good and typical file transfer speeds are about 105 Mb/s compared to 26 Mb/s using other USB 2.0 drives. This reduced the time for a complete backup of my PC from 4hrs 55mins to 1hr 40mins. It's also very quiet in operation.
The drive comes with some useful software which the user can choose to install. I particularly like the Eco Manager which you can set to put the drive into sleep mode after a specified time. This means that I can leave it connected to my PC and it will power down when not in use, which should hopefully prolong it's life.
Some people have commented that the cable is too short. It's about 45cm, which is the same length as those supplied with Western Digital and Freecom external hard drives I have, and long enough for my needs.
The only slight criticism I have is that the drive doesn't sit squarely on it's four small rubber pads, which can sometimes cause it to vibrate when sitting on top of my PC. This is a bit annoying, particularly as one of the reasons I chose it over a similarly specced, and cheaper, Hitachi model was because the Hitachi doesn't have any rubber pads. I would probably knock off half a star because of this if I could.