Here is the Mac version of Toshiba Canvio Portable HDD. The PC version was announced back in March 2010. Both PC and Mac share the same specs, but Mac version has its own Mac-customized backup software pre-installed inside.
There are three capacity available on Toshiba Canvio Portable HDD Mac Edition, starting from 500GB, 750GB and 1TB. The Canvio HDD is still standing on the USB 2.0 standard, but it has a nice shock sensor technology that could keep data safe from minor bumps. The MSRP of Toshiba Canvio Portable HDD is $99.99 (500GB), $119.99 (750GB) and $139.99 (1000GB).