Lacie 9000438U 2big Thunderbolt 2 Pro Dual-Disk Hardware RAID 8TB Capacity: 8 TB Internal Storage Media: 2 x hot-swappable 7200RPM/64MB cache (or greater) hard disks Interface: 2 x Thunderbolt 2 ports 1 x USB 3.0 port (UAS and USB 2.0 compatible) Interface Transfer Rate: Thunderbolt 2: 20Gb/s USB 3.0: 5Gb/s Security: AES 256-bit software encryption Kensington lock compatible Integrated cable lock Dimensions (WxHxD): 109 x 217 x 130 mm | 4.3 x 8.5 x 5.1 in.