The Seagate 1TB FreeAgent GoFlex Ultra-Portable USB 3.0 Hard Drive with FireWire-800 Adapter is a B&H Kit that bundles a Seagate GoFlex portable hard drive with an extra interface adapter cable. This kit includes the USB 3.0 cable that ships with the GoFlex drive, as well as a FireWire-800 cable!
This allows you to transfer data at blazingly fast rates on Windows PCs that support USB 3.0, as well as on Mac systems with FireWire-800. The GoFlex system allows you to change the interface of your external drive by simply changing its adapter cable. This allows you to upgrade the drive interface as new standards are released -- ensuring that your drive is never out of date.