A key two works but ...

FLOW:
The data record is not fluid at a constant rate, it varies from 12MB / s to nothing, 1 second pause, then 12MB / s etc ... tested on several machines, quality usb probably.
By cons, read, it works well 17MB / s stable.

QUALITY:
A key work on two purchased.
Key fine enough, strong enough (held on a car door key)
Fixing pretty good despite that small size

WARRANTY:
For HS key (NTFS format that loses the data, it's not top)
I test the warranty on USB key is not pretty pretty:
Bought on amazon, amazon council me to see pny, pny tells me to download two programs, the second program to test if the first one does not work, and actually, it's even better because neither works .. .
pny mail:
"...
If the key is detected as a disk amovibleEssayez uFIX either 1 or 2 to repair your key: [...] the language asia / English in the top left dropdown menu. If not re-contact AMAZON to enforce the guarantee of the first year taken into cahrge by the dealer:
... "
I look back on the amazon support of the security that is the reseller as stated pny ...