I have a PCMCIA Firewire adapter on a Pentium III laptop that I have connected to my Compaq with built in Firewire. I have a 15 foot, 6 pin cable running between the two computers. The Compaq PC does not see the Dell laptop. Looking for help???
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Why not just network them using a crossover ethernet cable if you don't have a router.
Firewire has proved unreliable for me, apparently losing portable devices while they are writing. Avoid.