This key is good in terms of presentation and strength invoice, in terms of flow, the result is highly variable in both reading and writing. 30 to 75MB in reading and from 25 to 40 MB / s USB write 3), which is okay but not amazing. This key is a little more cumbersome and is often not recognized on Windows XP. Finally a product value for money, nothing more. PS: usb2 in debit are against very good !!