Western Digital My Passport Studio for Mac Portable External Hard Drive 2.5 "FireWire 800 / USB 2.0 500GB (Personal Computers)
This hard drive is extra. The FireWire800 port works fine. Very fast. It is the day and night with the USB2. I think add one in series. Indeed, one bit connected to one another for the same result. Congratulations WD. Only flat, its price.