I am a long time user of the Maxtor Black Armor line of USB external hard drives, which enable me to type in a password when I connect the drive to a computer. From that point on, I can use the drive as a regular external hard drive, knowing that if the drive is lost or stolen the data will be secure. I need to upgrade my external drives to a larger capacity (1-2 TB), with the same security capabilities, the ability to work on a MAC (which the Black Armor does NOT), and hopefully offer USB 3.0 functionality. Are there any portable drives that offer this combination of features? My main computers run Windows 7 Pro 64-bit, although I travel a lot and need to plug into pretty much everything.