Does it work on USB or Firewire? If it does then it’s possible there’s an issue with the eSATA controller. If it doesn’t, then I’d try a different computer.
Thanks, Trancer. It works with a USB cable. However, I was advised by the technical help person who installed my system that because I’m a professional photographer using high resolution digital image files, that eSata connection is much faster than USB. Is this correct, or can I just continue with the USB cable?