Capacity - 28 TB Interface - USB 3.0 - USB 3.1 Gen 1 Compatibility - Formatted NTFS for out-of-the-box compatibility with Windows 10, Windows 8.1 and Windows 7. Requires reformatting for other operating systems. Dimensions (L x W x H) - 160 mmx 100 mm x 180 mm Includes - My Book Duo Desktop RAID storage - WD Discovery software for WD Backup, WD Security and WD Drive Utilities - USB-C to USB-C cable - USB-C to USB-A cable