Computer has A floppy, C hard drive, D DVD/RW, E CD-ROM, Z Zip drive that work fine. I formated a 10gb maxtor and put it in a USB case and hooked it up to the computer. It was recognized right away and shows in control panel as working properly and in disk management okay. But no drive letter has been assigned to it and disk management does not give me that opportunity. Any suggestions will be appreciated.