Amazon.com: Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5
Western Digital Blue WD40EZRZ 4TB 3.5 SATA 6G HARD DRIVE 718037840161 | eBay,Western Digital WD40EZRZ-00GXCB0 - 4TB 5.4K SATA 3.5'' 64MB Cache Hard Drive,Amazon.com: Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5,WD Blue 4TB PC Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5in - WD40EZRZ (Renewed)