My DriveStation HD-CEU2 is attached to the USB port on my wireless Linksys router. When I open the router's web page and look at storage, it shows the DriveStation as a FAT file system. However, when I click on the network drive using Vista Explorer, it shows it as a NTFS file system. Is there another way to detemine what the file system is? This is a new device, and I did not format it to NTFS, but then, I bought it from a retail store that might have restocked it.