How do I tell if my firewire connection is running as 400 or 800?

Posted by Tom on Super User See other posts from Super User or by Tom
Published on 2012-06-04T18:04:25Z Indexed on 2012/06/12 22:43 UTC
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macbook-pro

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firewire

I have a MacBook Pro with FireWire 800 and a freecom external harddrive that has USB3, FireWire 400 and 800.

I am using a Nikkai FireWire 800 cable that has 800 connector on one end and a 400 connector on the other end. The 800 connector is attached to the MacBook pro and the 400 connector is attached to the freecom drive.

Is there any way to tell what connection has been established? I looked at disk utility and it simply said 'FireWire'.

Is there a command-line tool that would give more information?

If it's 400, I plan to swap the cable for 800 connector at both ends.

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