George this is what I found on my MS509 With the help of some hi resolution pictures I found on the internet ,I discovered that indeed my scanner must be a chinese clone . It is missing the hardware components that control usb communications U16 - FT232BL ; USB to Serial converter, CRY4 Crystal and Capacitors C15 and C16 located on lower left side of circuit board. I think this is a lesson learned, buyer beware of internet sales
This response was on page 3 of the thread I started