This external hard drive is rock solid. It has an aluminium metal case probably for better heat dissipation and is assembled in U.S.A. It does not get its power from the USB port. It comes with its own power adapter like a cell phone charger. In addition, Lacie provides many different power plugs that you can fit on its power adapter so that you can use this drive in almost any country in the world. I am sure you can at least use it in UK, HK and China. Its dimension is about 4.5" X 7" X 1.25" and weighs approx. 2 lb. Heavier than the plastic external drives but much much more robust. Its operation is very quiet. There is a blue light on the top near the back. When blinking, it indicates it is in R/W operation. It is supposed to be used with USB 3.0 but is compatible with USB 2.0. It also comes with a complementary application called Wuala by Lacie. It allows you to backup your files to the cloud and make it accessible from anywhere. I have not tried it yet and cannot provide you more detail, but I think you get 1 year of 10GB free online storage. Overall, this is an excellent product. Highly recommended.