This B&H Kit
includes the G-Technology Dual Bay G-Dock Portable USB 3.0 HDD Enclosure with Two Removable 1TB HDDs
plus two additional G-Technology 1TB G-Drive ev Portable USB 3.0 HDDs
. The included G-Dock ev enclosure from G-Technology features two hot swappable bays to easily replace your drives. Each drive is USB 3.0 compatible and can be used individually or as a pair when placed in the enclosure. When placed in the G-Dock ev the drives can be configured in a variety of RAID formats including JBOD, RAID 0 and RAID 1.
The G-Dock ev comes equipped with dual Thunderbolt ports for up to 10Gb/s data transfer speeds as well as daisy chaining capabilities. With Time Machine compatibility you can plug this drive into your Mac running Mac OS X 10.7 or higher and begin saving and backing up your data.