I tried to use the Western Digital 1TB (MY BOOK), but the router never displayed any device when it was attached and the USB light was lit. I was able to partition it in windows. I suspect the integrated RAID HW had something to do with it. Are their any other external drives that work well or will I have to buy a $real 1TB drive an put it in an enclosure myself. I only have about 50 Gigs left in my 500GB drive, which is the largest my SATA enclosure supports. I might just get another one and a USB hub, I think I remember the router can support 2 external drives. Any one got ideas or recommendations. Thanks.