![Amazon.com: WD 4TB My Book Thunderbolt Duo Desktop RAID External Hard Drive - Thunderbolt - WDBUTV0040JSL-NESN : Electronics Amazon.com: WD 4TB My Book Thunderbolt Duo Desktop RAID External Hard Drive - Thunderbolt - WDBUTV0040JSL-NESN : Electronics](https://m.media-amazon.com/images/I/81GA6wrfaBL.jpg)
Amazon.com: WD 4TB My Book Thunderbolt Duo Desktop RAID External Hard Drive - Thunderbolt - WDBUTV0040JSL-NESN : Electronics
![Western Digital's Thunderbolt Duo - A Tale Of Two Thunderbolt Storage Devices: Seagate's GoFlex Desk and Western Digital's Thunderbolt Duo Western Digital's Thunderbolt Duo - A Tale Of Two Thunderbolt Storage Devices: Seagate's GoFlex Desk and Western Digital's Thunderbolt Duo](https://images.anandtech.com/doci/5797/WD-My-Book-Thunderbolt-Duo-Back.jpg)
Western Digital's Thunderbolt Duo - A Tale Of Two Thunderbolt Storage Devices: Seagate's GoFlex Desk and Western Digital's Thunderbolt Duo
![Western Digital My Book VelociRaptor Duo Review: An Expensive Drive That Makes Good Use Of Thunderbolt | TechCrunch Western Digital My Book VelociRaptor Duo Review: An Expensive Drive That Makes Good Use Of Thunderbolt | TechCrunch](https://techcrunch.com/wp-content/uploads/2012/08/featured-image.jpg)
Western Digital My Book VelociRaptor Duo Review: An Expensive Drive That Makes Good Use Of Thunderbolt | TechCrunch
![Western Digital WDBUPB0060JSL - 6 TB Thunderbolt My Book Thunderbolt Duo (for Mac / Apple) External Hard Drive (HDD) - CPU Medics Western Digital WDBUPB0060JSL - 6 TB Thunderbolt My Book Thunderbolt Duo (for Mac / Apple) External Hard Drive (HDD) - CPU Medics](https://cdn11.bigcommerce.com/s-qfzamxn9kz/images/stencil/1280x1280/products/127394/246669/western-digital-wdbupb0060jsl-6-tb-thunderbolt-my-book-thunderbolt-duo-for-mac-apple-external-hard-drive-hdd-2__81991.1534980027.jpg?c=2)
Western Digital WDBUPB0060JSL - 6 TB Thunderbolt My Book Thunderbolt Duo (for Mac / Apple) External Hard Drive (HDD) - CPU Medics
![Western Digital 3.5in 4TB My Book Thunderbolt Duo External Dual Hard Drive with RAID - WDBUPB0040JSL, Silver - Walmart.com Western Digital 3.5in 4TB My Book Thunderbolt Duo External Dual Hard Drive with RAID - WDBUPB0040JSL, Silver - Walmart.com](https://i5.walmartimages.com/asr/4a5afa92-333b-4a93-a3cc-a1ec23738452.e06a3fadda686657143eaa26ce3f2e06.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)