The WD My Passport external hard drive from Western Digital (WD) consists of compact 2.5-inch drives for Mac or Windows laptops and computers. The colorful WD My Passport series is easy to carry, thanks to the small size. The variations in colors and storage capacities ensures that there's something for everyone. On top of that, WD My Passport external hard drives are powered via the USB port, so you won't need an extra cable. In addition, the HDDs of the My Passport series have password protection and an automatic backup function.