USB HD floppy drives

Is it possible to connect a USB floppy drive to an Amiga with USB in order to read HD PC disk? (not HD amiga disks)

Only if someone has written Amiga drivers for the USB drive, and you have USB on the Amiga. Any USB device should work as long as someone has written the drivers to support it.

I'll test it for you tonight if you want.
I can borrow a USB floppy drive and have a USB stack installed.

Works fine with Chris Platons Poseidon stack.