When I ordered the external hard drive, I did not pay attention to the dimensions. I needed to quickly create a large backup and found the glossy black finish, nice and 1TB should have. I was all the more pleased that the hard drive is pleasantly small in comparison with the previous external hard drives, which had at least cigar box size. This Memory Station is about the size of a smartphone with 2.5 ". The installation was a breeze. You does not have a power supply, but a Y-USB cable that plugs with two Y-ends to the PC. Was indeed a little awkward, since I have no desktop PC or laptop. Then put even the Mini USB connector on the hard disk and the PC recognized the new hardware the same and installed the drivers. "My Computer" is another drive visible. Then quickly pulled over everything and finished was the great security. I hope that the small hard drive holds a little longer than the old ones, which unfortunately all were broken quite quickly.