Is my WD Maybook Studio running at FW800

Hi
I have a new MacBookPro and an External Western Digital Mybook Studio hard drive. I am connected to the Firewire connector.
How can I tell its running at FW800 and not FW400. Or can the macbook only run at FW800
Thanks

I've never been able to get a "clear" answer about this , eww, so I just did a little "quick and dirty" experiment of my own.
I hooked up a firewire 800 drive and copied across a video file of about 2.8 gig to the MBP's HD and copied the file across. Took just under a minute.
I then erased the file from the MBP , chained a FW400 drive off the FW 800 drive, and repeated the experiment of copying from the 800 to the MBP. It took about 10 secs longer.
I then copied the same file from the FW800 drive to the FW400. Took just on two minutes.
(I also tried copying from the FW800 to the MBP with the FW400 drive removed from the chain, and another FW800 connected in its place, just in case simply having any items at all made a difference. the time was the same as with no other drives connected)
Now , this was very ,much a "quick and dirty" experiment. To do it properly I'd have needed to makes sure that all the drives themselves were the same brand and speed, same level of fragmentation, etc etc.
Neverthless, I think it is pretty clear that while there was a small "impost" imposed by hooking up the FW400 drive, it doesn't reduce the speed to anything like half of the original. More like a 10% t 15% loss in speed for the FW800 when a FW400 drive was chained from it.
So, I'm finally pretty satisfied that Kappy's view of this is pretty much correct. If the FW400 drive is after the FW800 in the chain, then the FW800 will still continue to operate at close to regular FW800 speed, and won't, (as one reads in many places, and I've even said it myself) be automatically chopped to FW400 speed.
Cheers
Rod

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