The OWC Mercury On-The-Go USB (Universal Serial Bus) 3.0 & 2.0 / Fire Wire 800 (Fire Wire 400 Backwards Compatible) Storage Solution provides 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 & Highly Reliable storage weighing less than 11 ounces & that is small enough to fit in your pocket. Compact & Versatile If you're looking for one of the most compatible mass storage solutions made, look no further! The OWC Mercury On-The-Go drive is all you'll need! Packing a one-two punch of super fast USB (Universal Serial Bus) 3.0 & Fire Wire 800, the OWC Mercury On-The-Go has what it takes to truly work cross platform. The Mercury On-The-Go Pro is bus-powered, so it doesn't require an AC adapter! Cool & Silent The OWC Mercury On-The-Go's fanless design offers near silent operation while still keeping your drive cool. The built-in aluminum heatsink underneath the drive & passthrough cooling vents on the top of the case work in tandem to provide optimum results. Fast & Reliable The OWC Mercury On-The-Go uses the latest Oxford & ASMedia chipset for both USB (Universal Serial Bus) 3.0 & Fire Wire 800. Designed to work with SATA hard drives & SSDs, this chipset is the latest evolution for the best performance on the market.