Fast transfer (40 seconds for a film), the product is very small, more than I imagined: it's a little more than the size of the palm of my hand!
The shell is plastic, which does not prevent him from having an effective product, pleasing to the eye and good. Samsung has opted for a plastic shell to properly protect and cushion maximum impact! No XP recognition problem, the total space of 640GB is not but 596GO (As you know, it's still less than the indicated GO for external HDD). There is no noise, is very quiet, it does not account for its operation when plugged in, and most importantly, it does not heat, a big + for sustainability!
In short, I am completely satisfied, and this product, and Amazon was serious about sending and delays, it was my first order on Amazon and certainly not the last!
By cons, a little unfortunate thing: the cord supplies is too small for my taste (about 15cm). Fortunately, I have 2-3 larger, but that little detail should not be an argument to miss this external HDD!