I have a nice, almost new Firewire 800 hard drive that I thought would be a good extra storage unit for my new MBA 13. But, of course, the MBA has no Firewire out port. So, I'm wondering if I can use the USB port out or the Thunderbolt port on my new laptop with a cable that has a Firewire 800 plug on the other end. Obviously, two-way communication between the devices is required. USB speeds would be more than acceptable. I know Apple makes such a cable, but it seems to have mixed reviews, and I'm not certain it'll work for my application. Do-able? If so any recommendation on a supplier of such cables? Thanks!