Western Digital My Book / My Book Essential User Manual - Page 6

MY BOOK USER MANUAL Operating System Compatibility Your My Book drive and the WD Drive Utilities and WD Security software are compatible with the following operating systems: Windows  Windows 7® Mac OS X  Mountain Lion  Windows 8  Mavericks  Windows 8.1  Yosemite  Windows 10  El Capitan The WD Backup software is compatible with the following operating systems:  Windows 7  Windows 8  Windows 8.1  Windows 10 Compatibility can vary, depending on hardware configuration and operating system. For highest performance and reliability, always install the latest updates and service pack (SP). For Windows computers, go to the Start menu and select Windows Update. For Mac computers, go to the Apple menu and select Software Update or App Store. Disk Drive Format Your My Book drive is formatted as a single NTFS partition for compatibility with all updated Windows operating systems. If you want to use the drive with a Mac computer, see "Reformatting the Drive" on page 35 and "Troubleshooting" on page 39. Physical Description As shown in Figure 2, the My Book drive has:  A power/activity LED indicator on the front  The power connector, interface port, and a security slot on the back Power/Activity LED The power/activity LED shows the drive's power state as follows: LED Appearance Power State/Activity On steady Fast flashing, approximately 3 times per second Slow flashing, approximately every 2.5 seconds Idle Activity System standby USB 3.0 Interface USB 3.0 supports data transfer rates up to 5 Gb/s. USB 3.0 is backward compatible with USB 2.0. Connection to a USB 2.0 port transfers data at the port speed-up to 480 Mb/s ABOUT YOUR WD DRIVE - 2