The WD My Book Duo 6TB offers high-speed RAID disk space and large capacity for storing videos, photos, music and documents. In RAID 0 mode, it achieves high performance with a read speed of up to 360MB/sec by transferring over a USB 3.1 Gen 1 of the two-sided type C interface. Configuring RAID 1 then mirrors the data on both embedded drives, so you'll be sure to automatically back up any stored content. Although the drive has the primary USB C interface, it is universally compatible with classic USB 3.1 Gen 1 and USB 2.0 (cable supplied). For connecting additional accessories, it also provides a USB 3.0 hub with 2 ports.