Jolie key, you can select the flow, it's nice. the ring to connect it to a small cord (but then very little!) is too narrow. But for me it is not very helpful since I wanted the keys to good capacity for use for ReadyBoost to speed up a bit my system, which works very well indeed. For cons, I have not read all the comments but is anyone else noticed that instead of having a capacity of 16 Giga bytes, we are left with 14.40 Gigabytes ?! I struggled to gain acceptance in the Ready Boost. Indeed it must first be formatted before a key, but most of the time it passes. Here I have struggled to format it in the task manager ... Apart from this, it works. I have not tested the transfer rate or speed, much less data loaded on it. For this, even when prefer quality key, even if they are far from data.