
Western Digital 4TB WD Blue PC Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5,

Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5,

Western Digital WD40EFRX WD Red NAS Hard Drive - Hard Drive - 4 TB - Internal - 3.5 inch - SATA 6Gb/s - Buffer: 64 MB - for WD My Cloud EX2, EX4: ,

Western Digital WD40EFRX WD Red NAS Hard Drive - Hard Drive - 4 TB - Internal - 3.5 inch - SATA 6Gb/s - Buffer: 64 MB - for WD My Cloud EX2, EX4: External Hard Drives: Amazon.com.au,

Western Digital 4TB WD Blue PC Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5