WD Blue SATA3 6Gbps(SATA6G) 3.5インチ 内蔵ハードディスク 4TB,Wd Blue 4tb Hard Drive | 2tb Hard Disk Wd Blue | Hard Disk,Western-Digital-Blue-4tb-Hard-,Amazon.com: WD WD10EZRZ Internal Hard Drive 8.9 cm (3.5 Inch,Western Digital Blue 4tb Hard Disk, Internal, 5400 Rpm, 64MB