Older ACD USB/Firewire ports and a Thunderbolt MBA.

I have an older Apple Cinema Display (20) and a Thunderbolt MBA.  Can I use the Firewire ports on the ACD if I use a Thunderbolt to DVI adapter?
Specifically, I have an older iSight external camera (Firewire based) that I would like to use with the ACD whilst the MBA is in clamshell mode.  With the Firewire ports on the ACD, I'm intrigued by how I might access them with the MBA.
Is this possible?
TIA,
eznet

Same here. Since a few weeks, my MacPro ejects USB HDD's as soon as I write or read data on it.
(no I haven't installed something new at this time and all HUB's and HDD's have their own power supply, and yes they have been exchanged, so its not a broken cable or so !!!!!!!!)
After a reset of the NVRAM and PRAM its better for an hour or so, then starts to eject again.  I've seen a lot of communities with exact the same question, but never a solution for it. There is also nothing in the support tab of apple.
Hope someone here can help me out or due to the fact that this is a AplleSupportCommunity, a Apple-Employee may starts to do his job and help this huge amount (I guess there are hundrets or tousand) of mac-user with exact the same problem....
btw: don't agree with MACATTACK2010 that this is a hardware problem, cause there are a lot of people in the
        net that ask the same question with brandnew Hardware. I think it's an OS or an Update Bug, or may both.

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