more than one USB key

[SigmaTec]

Ok for the PU.

And for Lua script ?
Actually I use these commands :
"part = part or devn"
"os.execute('umount -f /mnt 2>&-')"
"res, stat = io.readproc('mount /dev/' .. part .. ' /mnt 2>&1')"
But how to access one USB key or another specialy on the USB Hub ?

Thank's Daniel.