Western Digital My Book Thunderbolt Duo User Manual page 11

4. Use the Thunderbolt cable to connect either port on the device to your computer:
5. Use the other port on the device to connect additional Thunderbolt peripherals.
Note: Thunderbolt technology supports a total of seven devices—your computer and up
to six Thunderbolt storage devices.
6. The device automatically powers up and mounts to your computer.
7. Verify that the My Book Thunderbolt Duo appears under DEVICES in the Sidebar
area of your Finder display:
Note: If the External disks check box is selected on your Finder Preferences dialog, the
My Book Thunderbolt Duo icon displays on your desktop:
8. The first time you connect the device to your computer, a message asks if you want
to use the device drives to back up with Time Machine:
Note: Currently the Encrypt Backup Disk check box only appears on computers using
the Lion operating system. DO NOT select this check box. Your My Book
Thunderbolt Duo device leverages the operating system to enable RAID
MY BOOK THUNDERBOLT DUO
CONNECTING THE DEVICE AND GETTING STARTED – 7
USER MANUAL