The commissioning via USB interface, both in the operating system Windows 7 and WIN 8.1 is just a trick.
While when connecting to the respective system carried equipment technically flawless. But the device is not functioning. HD floppy was not read. The system demanded formatting a floppy disk. Come to this requirement, the majority of the inserted floppy is read (8 of 10 ok) or described. The latter does not make sense for me because I wanted to copy only my existing disks on HD and the disks have then handed over to the household waste. That was the price of 11.85 EUR worth it. Thus, the device has served its purpose and will disappear in the bottom drawer of my electronic scrap shelf.
For handling DD disks I can not say anything because I have no DD disks.
All in all - the part has helped me work up contaminated sites. It worked. More need, I do not want to.