Anyone buying a new notebook, is often faced with the fact that a modem as then heard no more floppy disk drives to the standard equipment. Who then but needs from and ship to a fax is forced to resort to such parts. Too bad if the notebook is so new then that only 3 USB ports are available. Because on four different devices with USB 3 ports and Win7x64 was the only one "Unknown Device" recognized plug. Fortunately, I have on my device nor a USB 2 port on which it is detected and runs without problems. The manufacturer should finally respond with new firmware.