Western Digital MY PASSPORT WIRELESS PRO User Manual page 40

The Apple Time Machine is a built-in feature on Mac OS X Mavericks, Mountain Lion, Lion,
and Snow Leopard computers that can back up everything on your computer: music,
photos, documents, applications, emails, and system files. Your My Passport Wireless drive
must be in USB mode to use Apple Time Machine.
The My Passport Wireless drive can store these backups, so that if your hard drive or
operating system should crash, or you lose a file, you can easily restore it to your computer.
You can specify the maximum amount of space you'd like to use on your drive to back up
your files. Consult Apple Time Machine documentation.
My Passport Wireless Pro
User Manual
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