My Book 18TB WDBBGB0180HBK-EESN Features: Complete Backup Password Protection WD Reliability Watch the Power of My Book Come to Life Do More With Discovery Easy To Use Specifications: Capacity 18 TB Interface USB 3.0 USB 2.0 Operating System: Windows® 10, Windows 8.1 macOS 10.13+ Dimensions (L x W x H) 5.48" x 1.93" x 6.72" In The Box Desktop hard drive USB 3.0 cable AC adapter WD Discovery™ software1 with WD Backup™, WD Security™ and WD Drive Utilities™ Quick install guide