Connected to the USB 3.0 port and recognized on Windows 7, the write speed / playback, although not exactly as advertised in the description is more than satisfactory compared to other key claiming ultra fast.
1,37Go file loaded in a few seconds is perfect.
In USB 2.0, the flows are also very decent, much better than USB 2 "classic"
Wise choice for those who would install a Linux live it.