ST4000LM016, W80, WU, PN 1N2170-567, FW 0003, Seagate 4TB SATA 2.5 Hard Drive
Amazon.com: Seagate 4TB Laptop HDD SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST4000LM016) : Electronics
Toshiba's 2.5” hard disk drive with 3TB capacity finally hits retail | KitGuru
Buy Wholesale China 4tb Hdd Internal Hard Drive Disk Sata Iii 256mb Used 500gb 1tb 2tb 4 Tb 2.5" Harddisk For Laptop & Internal Hdd 2.5 at USD 15 | Global Sources