The Imation Defender H100 is a 500GB USB 2.0 Portable External Hard Drive. Its 500 GB allows for ample storage of pictures, videos and documents for safekeeping or extra capacity. This Imation USB Hard Drive offers one-factor authentication with administrative controls to manage up to 10 users and strong support for complex and custom password policies. This ensures that your information remains safe even if the hard drive is lost or stolen. With the Imation External Hard Drive, your data is protected with hardware-based AES 256-bit encryption implemented in CBC mode, which is started each time the USB Hard Drive is used. The power supply for the external drive is your USB 2.0 port. It is compatible with Windows XP/Vista/7 and Mac OS 10.5 or higher. The Portable External Hard Drive can be used to share documents, pictures and videos from one computer to another.