When I attach a USB drive to a new Dell Poweredge 840, it installs and then just hangs there - when I try to go to disk management it hangs with the hour glass. If I restart, then open Disk Management, then plug in the drive, I see the USB drive but it never finished mounting and I get the hour glass then have to hard reboot, although I can still do things in windows. I can plug in a USB stick and it works fine, but not a External disk drive. I have tried 3 different manufacturers. Any Ideas? These drives all work in a different server - both are SBS 2003 with service pack 2.