OWC Mercury On-The-Go Bus Powered FireWire, Bus Powered USB 2.0, and eSATA Portable Hard Drive Solutions

"High-Performance 2.5" 5400RPM, 7200RPM, and SSD solutions with up to 64MB data buffers gives you maximum storage in an ultra-portable, totally bus powered design. Stylishly engineered in a sleek, impact-resistant acrylic enclosure, the Mercury On-The-Go Pro incorporates shock-isolation technology to give maximum protection for your precious data inside. The Mercury On-The-Go Pro is a true must-have for users like you who are seeking High-Performance and Highly Reliable storage weighing less than 11 ounces and that is small enough to fit in your shirt pocket."