OWC has announced today its newest OWC Mercury On-The-Go Pro model – the first FireWire 800/400 and USB 2.0 bus powered 2.5″ portable drive offering 1TB of storage capacity in a pocket-sized portable storage solution for Mac or PC users. It features data transfer speeds up to 100MB/s and is bus powered so it can be used without an AC adapter. The OWC Mercury On-The-Go Pro 1TB model can hold up to 1,000,000 JPEG photos, 500 DVD movies, 76 hours of digital video, or 350,000 MP3 songs in its stylish, impact resistant acrylic case. How much will it cost you to carry around 1TB? An equally whopping $359.99 if you want Firewire 400, 800 and USB. Just want USB, then you can grab one for $299.99.