Seagate GoFlex Thunderbolt Adapter (STAE121) Increase performance Thunderbolt technology is a revolutionary interface supporting high-resolution display and high-performance data devices through a single port. Allows you to take it with you everywhere you go Works with any portable GoFlex Drive Upgrade your interface for faster file transfer performance Compatible with Thunderbolt displays and other devices Bus powered, no external power supply required 10 Gbps Thunderbolt port System Requirements: GoFlex Ultra-Portable Drive, Mac OS X operating system 10.6.8 or higher, Available Thunderbolt port & Thunderbolt cable Inside the Box: GoFlex Thunderbolt adapter, quick start guide (Note: Does not include Thunderbolt Cable)