Thunder Pro A/V eSATA, FireWire 800, FireWire 400, USB 2.0 Interface Enclosure Smart Auto Power Switch in front (automatically turns on/off when drive is plugged in) Supports Multi-Stream DV, HDV, DVCPRO HD with Real Time Effects Apple Time Machine Compatible, Integrity, Disk Defrag, and many more utility tools (Mac) value at $89.95 for free High Quality Anodized-Aluminum Enclosure, Stackable