From the Manufacturer:

The LaCie Rugged Triple Hard Disk provides universal connectivity: you've got the superior speeds of USB 3.0 and FireWire 800, and full backward compatibility with FireWire 400 and USB 2.0. You can transfer a 700MB video file in less than 7 seconds with USB 3.0, compared to 25 seconds with USB 2.0. With the Rugged Triple's 7200rpm model, you can even achieve speeds up to 110MB/s. Whether your goal is super speed or complete compatibility, the Rugged Triple has everything you need.

The Rugged is one of LaCie's most popular hard disks, and it's the best way to protect your data. It conforms to military standard 810-F, and can support drops from up to two meters. It helps you carry your files with confidence, no matter where the road takes you, thanks to its shock-absorbing sleeve, aluminum anti-scratch casing, internal rubber bumpers, and a 1000G shock-resistant hard drive. Calculations are based on average read time.

LaCie AES 256-bit encryption software comes standard with the Rugged Triple. They've made it easy for you to create a password-protected area on your drive where you can securely store all of your confidential information. AES 256-bit encryption technology is one of the most robust on the market today, and makes the Rugged Triple more secure than ever.

Capacity: 500 GB (7200rpm)

Interface:

• USB 3.0 port (USB 2.0-compatible)
• 2 x FireWire 800 port

Rotational Speed (rpm): 7200rpm

Interface Transfer Rate:

• USB 3.0: up to 5Gb/s
• USB 2.0: up to 480Mb/s
• FireWire 800: up to 800Mb/s
• FireWire 400: up to 400Mb/s (cable sold separately)

Max Sustained Transfer Rate: up to 110MB/s

Maximum Drop Height: 2 m / 78.7 in. in non-operating mode (dropping is not recommended in operating mode)

Software:

For PC and Mac:

• Easy setup (LaCie Setup Assistant)
• Automatic backup (LaCie Backup Assistant)
• AES 256-bit encryption: LaCie Private-Public software with password protection
• Automatic Eco mode: lowers the power consumption by up to 40% when not in use (may vary from one drive to another)
• 10GB Wuala Secure Online Storage (1 year included)

Size: 90 x 28 x 145 mm / 3.5 x 1 x 5.7 in.

Weight: 260 g / 9.2 oz.

System Requirements:

• Computer with a USB 3.0, USB 2.0, FireWire 800, or FireWire 400 port
• Latest version of Windows XP, Windows Vista, Windows 7, Windows 8 / Mac OS X 10.5 (Intel Only), 10.6, 10.7, 10.8
• Minimum free disk space: 600MB recommended
• High-speed internet for online storage