From the Manufacturer:

Deadlines rule our world. When digital storage is critical for your project, it had better be as fast and reliable as you are. From the desktop to the badlands, it has to connect to any computer, deliver more than enough speed for the most demanding applications, and protect data against any threat. Enter the LaCie Rugged USB 3.0 Thunderbolt Series.

Don't let your project get derailed by external drive/computer incompatibility. With both USB 3.0 and Thunderbolt interfaces, the LaCie Rugged is a perfect match for your Mac and PC. And because USB 3.0 is backwards compatible, you can connect it to any standard computer on the planet. The LaCie Rugged is also fully bus-powered through the included USB 3.0 and Thunderbolt cables. Its portability and interfaces make it the must-have sidekick to a new Mac or Ultrabook

Get lightning-fast transfer speeds on Mac and PC thanks to the USB 3.0 and Thunderbolt interfaces. With the SSD version, the LaCie Rugged delivers up to 385MB/s – the fastest bus-powered product ever. The HDD version performs up to 110MB/s, a 35% improvement over FireWire 800. Back up and transfer mountains of data in a fraction of the time. Enjoy noticeably more responsive photo library browsing.

Protecting your data is vital to meeting your deadline, and disaster can strike at any moment. That's why the LaCie Rugged is MIL-compliant for superior data protection from accidental drops up to 1.2 meters (4 feet). Whether it falls off your desk or out of the pocket of your safari jacket, you're confident that your data is still accessible. The SSD version goes a step further for the ultimate in resilience against vibration and shock. Both versions are tough enough to be shipped for reliable delivery to clients or partners. Included software even protects your files from prying eyes with AES 256-bit encryption.

Capacity: 526GB

Interface:

• USB 3.0 port (USB 2.0-compatible)
• Thunderbolt port
• Rotational Speed (rpm): 5400rpm
  

SSD Type: SATA 6Gb/s

Interface Transfer Rate:

• USB 3.0: 5Gb/s
• Thunderbolt: 10Gb/s

Average Transfer Rate:

(Thunderbolt & USB 3.0) :

• SSD: 385MB/s
• HDD: 110MB/s

Maximum Drop Height: 1.2 meters (4 feet) in non-operating mode (dropping is not recommended in operating mode)

Software:

• Easy setup (LaCie Setup Assistant)
• Automatic backup (LaCie Backup Assistant)
• AES 256-bit encryption: LaCie Private-Public software with password protection
• 10GB Wuala Secure Online Storage (1 year included)

Size: 89 x 140 x 24 mm / 3.5 x 5.5 x 0.97 in.

Weight: 260 g / 9.2 oz.

System Requirements:

• Latest version of Windows XP, Windows Vista, Windows 7, Windows 8 / Mac OS X 10.5 (Intel only), 10.6, 10.7, 10.8
• Computer with an Thunderbolt, USB 3.0 or USB 2.0 port
• High-speed internet for online storage
• Minimum free disk space: 600MB recommended