Seagate has continued to expand its GoFlex hard drive system, which features interchangeable interfaces for interoperability between various connection types. The company's latest adapters enable users to upgrade their existing GoFlex drives with a Thunderbolt interface to take advantage of fast transfer speeds on Apple's latest Macs and a number of upcoming Windows machines. In our full review, we'll take a closer look at the Thunderbolt adapter for GoFlex portable drives.