Tried 3 different length cables with the same results. Just to double check the enclosure I hook it up to my other machine which has a USB3 Adapter and it works fine. I know when I first got the Gigabye board it had rev FB bios and rev 1 usb3 drivers. When I tested it back then I couldn't even read from the enclosure. Now with the latest and USB driver I can read with no problem but I still can't write. I think at this point I'm going to open a trouble ticket with both Gigabyte & SunbeamTech and see what happens. Thanks for your help, if you can think of any else let me know.