that's correct, you can only physically connect the drive to one computer at a time, but you can share it across a network easily with an CAT 5 crossover cable (for connecting 2 computers with no hub/router) or a standard CAT 5 cable (for connecting on a network hub or router).
We do this with our Firedock between two Macs and a PC with no problems. Jsut make sure to set up sharing privelages for the FW drive.
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Hope this is helpful.
NP Recording Studios Analog approach to digital recording.