The Western Digital WD My Book Duo is a versatile external storage device with a spacious 7TB storage capacity split between two SATA HDD drives. With its USB 3.0 interface, this silver device offers fast data transfer rates. It features dual drives, a removable drive cartridge, and RAID support for added reliability. The unit also includes a temperature sensor, indication lights, and auto power on/off capabilities, making it a convenient and durable choice for expanding storage on your computer or network.

Purchased to resell, tested, wiped, contains 2-4TB drives for a total of 7 TB of storage

Copies and deleted files just fine, included the WD software on the drive.

Decent condition and comes with usb 3 data cable and power adapter, i tested both usb ports on the back and they read another drive being plugged in.

Drives can also be RAIDED, but are currently set up as two separate drives.