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> Firewire 800/400 Problems
djrucksack
post Sat 8 Apr 2006, 17:11
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From: Cheltenham - UK
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Hi there.

I've got problems trying to make my firewire devices function to their full capablility.

I have a OWC Mercury Elite Pro Al 250Gb Triple interface external hard disk (what a mouthful!) connected to my powerbook G4 1.5Ghz via a firewire 800 cable to the onboard firewire 800 slot, and it works fine, running at 800 Mb/s.

BUT, I've also got an M-Audio Projectmix which connects with a firewire 400 cable. I've just bought a PCMCIA firewire adapter so that the hard disk and the Projectmix can have their own separate bus, but when I plug the Projectmix in the speed of the Hard disk connection drops to 400Mb/s.

I can't understand why, when they're connected on different buses.

(The whole reason why I bought the PCMCIA Firewire card was to get around this problem!)

Please help!!

Thanks.
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djrucksack
post Sun 9 Apr 2006, 14:43
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From: Cheltenham - UK
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There's no information about the card in system profiler. It just says:

FireWire Bus:

Maximum Speed: Up to 400 Mb/sec

I've just noticed that in the top window of the profiler in the firewire tab, the firewire card's FireWire Bus sits above the Built-in FireWire bus. Does this mean it's higher in priority? Is there any way to change them around?

Just inserting the card makes the speed of the built-in bus drop to 400Mb/s regardless of whether any firewire devices are plugged into it.
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