So my two hard drives to NTFS do not work (but they are recognized because of their size "NTFS" it does not work).
For my USB key they both operate. I have a USB HUB that allows me to connect multiple USB Keys on the same USB port. By using so I can connect my two USB Keys on my laptop and so copy a file from a USB stick to another, or when a USB stick to my mobile (and vice versa).
Anyway ... it works perfectly as I had expected; p (for NTFS I knew it not fonctionnerais but I prefer to specify if other hesitant buyers do not know it)