The Mercury On-The-Go Pro Triple Interface Portable Case from OWC / Other World Computing is a portable hard drive enclosure that features FireWire 800 and USB 3.0/2.0 connectivity. It can fit any drive up to 12.5mm in size and up to 2.2TB in capacity.
The enclosure also features a dual processor for parsing drive data - an Oxford 944/ASMedia 1051e chipset. This allows both FireWire 800 and USB compatibility through a single enclosure. This feature also ensures compatibility for both Mac and PC users.
The plug-and-play Mercury On-The-Go also includes all the cables you need, so you can start using it right out of the box. Although it is powered through the USB or FireWire ports, an optional adapter is sold to keep power going when your computer's power isn't enough.