too fragile 35

The weak point of this key is the articulation of the key itself to the attachment. While the key and its attachment are solid, the axis that connects the vanished on mine today. She was on a keychain, so a priori not in extreme conditions ... Fortunately I have not lost the key, and was able to replace the axis in question by a beefier wire. But it is hideous ...

It's a shame because it is fast but I recommend instead a unibody design, such Transcend Jet Flash 710S USB 3.0 64 GB Silver, even if it is significantly slower.

In an old but via USB3 Express card (startech ECUSB3S254F):

HD Tune: USB DISK 3.0 Benchmark

Transfer Rate Minimum: 92.5 MB / sec
Maximum Transfer Rate: 101.4 MB / sec
Transfer Rate Average: 98.7 MB / sec
Access Time: 0.6 ms
Burst Rate: 41.0 MB / sec
CPU Usage: -1.0%

Transfer 1 3,6Go file:
135s writing (~ 27 MB / s)
36s in reading (~ 100 MB / s)