L.A. Computer Company offers the Western Digital 2TB My Passport Studio Portable FireWire 800 / USB 2.0 External Hard Drive for Mac, model no. WDBU4M0020BBK-NESN, for $169.99 plus $6.87 for shipping. That's the lowest total price we could find by $2. It features two FireWire 800 ports, one USB 2.0 port, password protection and hardware encryption; it can also be reformatted for use with a PC.