W.D Elements External HDD 4TB WDBU6Y0040BBK - Black   Disk format: 2.5" Disk type: External Capacity: 4TB Interface: USB 3.0 5Gb/s Compatible operating systems: Windows 11/10/8/7, MacOS support Dimensions (mm): 82 x 111 x 21 Weight (g): 235 Colour: Black