I bought this drive because I needed extra storage space & because of the interchangeability with the 3TB drive I already have, which is connected to a Goflex Cinema.
I purchased an USB 3.0 card for my pc in order to take advantage of the higher speed possible with this interface.
First impressions were not good - initially the drive didn't seem to want to spin up when connected, no lights on, nothing.
I found that 'wiggling' the cable at the drive interface connector (micro B) would get it to initialise, but the slightest movement would cause the connection to fail. I verified that the same thing happened when connected to a 'known good' USB 2.0 connector on my pc, theoretically absolving the new USB 3.0 card from being the culprit.
Cutting back the plastic shroud on the micro B cable connector improved things slightly, but the fit of the cable plug into the drive interface socket still felt 'loose' & the connection would still intermittently fail.
I went out & purchased a new connecting cable - and 'voila' the connection was much improved.
Now the drive was working properly I could give it a decent run - and it is noticeably faster than USB 2.0 - on par with the ESATA connection I have for another external disk, so I am now very happy.
So the drive itself is fine, the interface unit is fine, it is just a shame Seagate have spoiled the package by bundling a cheap cable that is so bad it almost made me return the whole thing, as initially it didn't seem to work.