Drivers with win 10

ver 1.6.xx

What is it when I cannot update the driver for usb in the 'drivers' dir ?
That is win cannot find a driver in the dir.
I have been previously been working OK recently but now it will not recognise the port.
Presumably the results of another win update ??
The instructions mention using an inf file but there is no sign of it in the drivers dir.

Is it an original Arduino or bought @ eBay, AliExpress etc?

Btw, the driver folder is full of .inf files :stuck_out_tongue: