I tested it with Crystal Disk Mark, and I get impressive results: 295 Mb / s read and 260 MB / s write; and 30% higher than the ones I obtained with the Data Traveler Generation 4 USB 3 Kingston.
Small problem, though, to stress; if I do not use the USB Boost Asus 3, the results fall to 210 in reading and 200 in writing! That is to say that one must be well equipped with equipment for best performance of this key.
But that does not detract from its excellent manufacturing quality, robustness, efficiency, convenience with its retractable tip and, in addition, which does no harm, it is very pretty.
In conclusion, this is a significant investment, but it is really worth!