Promise just released the Pegasus J2 Ultra-Portable Thunderbolt Storage device. It's amongst the smallest and fastest ultra-portable Thunderbolt storage device. Available in 256GB and 512GB capacities, the Pegasus J2 is flash-based, which makes it super-durable and quiet. Powered in AC mode, it will be able to achieve a fast 750 MB/s transfer speed. The Pegasus J2 is the perfect complement for Apples MacBook Air and MacBook Pro.

The Pegasus J2 ultra-portable Thunderbolt storage device is currently available from the Apple Online Store and through the PROMISE global network of distributors and value added resellers. 

• 1 x Thunderbolt technology Port at 10 Gb/s (1.25GB/s)
• Supports RAID 0, 1 and JBOD
• Providing up to 750MB/s
• Capacity
  - 256GB of raw capacity
  - 512GB of raw capacity

Promise Pegasus J2 Ultra-Portable Thunderbolt Storage