Features :Hard Drive500 GB Low noise external FireWire & USB 2.0 HD for professionals FireWire 800 & 400 interface, for maximum speed Data Transfer Rate: max. 800Mbit/s (FireWire800), 400Mbit/s (FireWire400), max. 480Mbit/s (USB 2.0) Unique SYNC button for One Button Data Synchronization One button data encryption (128 bit AES hardware encryption) Winner of the IF Design Award 2007 Power On/Off Button Low noise, low power consumption High quality, heat absorbing aluminium enclosure Dimensions: 15x18x5 cm / 5.9x7.1x2 inch Weight: 1400 gr./49 ounce Windows 2000/XP, MAC OS X v. 10.1 or higher