G-Technology G-SPEED Shuttle XL 48TB 2 x Thunderbolt 2 3.5 External Hard Drive 0G04655 Black RPM: 7200 RPM RAID: Pre-configured in RAID 5, user configurable in RAID 0,1, 5, 6, 10 & 50 Dimensions: 15.70 x 6.90 x 9.80 Package Contents: G-SPEED Shuttle XL 8-Bay Storage System 8 x Removable disk modules 1 x Thunderbolt cable Power cord Quick Start Guide