This case is indeed a bit "cheap" because on arrival I heard things that moved inside. After confirming that the electronic part working properly, I decided to invalidate the warranty and to open it to see that moved.
I discovered that there was a big iron plate which is normally attached at the bottom to give stability to the case when you put a disk 3.5 "in it. This plaque was held by two small screws, screwed into studs plastic; these studs are broken, probably due to a fall in transport.
A little work with the glue gun and everything is back in order, but it is obvious that the design is a bit light for transport.
Side performance, no problem immediately recognized by XP, Vista and 7. Transfer rates up to 2 USB.