WD MY BOOK 4TB
Item Code: WD-BBGB0040HBK-SESN
Formatted exFAT for out-of-the-box compatibility with Windows and Mac. Operating System: Windows® 10, Windows 8, Windows 7, Mac OS X El Capitan, Yosemite or Mavericks. May require reformatting for other operating systems. Compatibility may vary depending on user’s hardware configuration and operating system.