WD 6TB My Book Pro Professional RAID Storage - Thunderbolt USB 3.0 - WDBDTB0060JSL-NESN Cache: N/A Dimensions: 5.82 x 4.28 x 8.51 Weight: 7.87 lbs. Package Contents: Dual-drive Thunderbolt 2 RAID storage system Thunderbolt 2 cable (1-meter/39.4) USB 3.0 cable Power supply Quick install guide Style: N/A