Western Digital today introduced My Book Pro Edition, the newest member of the company’s My Book product family. My Book Pro Edition combines three leading interfaces including FireWire 800, FireWire 400 and USB 2.0; features backup and system recovery software; and is available in capacities of 250GB and 500GB. The Pro version also offers SmartPower automatic power on/off, Safe Shutdown and LED activity lights. My Book Pro Edition is available now for a suggested retail price of US$249 for the 250GB version, and $349 for the 500 GB version.