Expanding on its portable storage offerings, WD today introduced its new Mac-formatted My Passport Studio Portable Drives.

The newest members of the My Passport family are designed for Mac users on-the-go and are equipped with both FireWire 400 and USB 2.0 interfaces, and include a soft drawstring carrying bag for protection from scratches and dirt. The portable drives are offered in capacities of 320 GB and 250 GB.

Ultra portable, these drives are USB-bus powered which eliminates the need for an external power adapter.

WD's My Passport Studio portable drives are available now at select retail stores and from WD's online store (www.shopwd.com). MSRP for the My Passport Studio portable drive with 250 GB capacity is $159.99 USD and 320 GB is $219.99 USD.