Seagate Skyhawk 4TB ST4000VX007 SATA 3.5 6Gb/s Surveillance Video HDD Hard Drive 763649129623 | eBay
Seagate St4000vx007 4tb Video Surveillance Hdd Internal Hard Disk Drive 5900 Rpm Sata 6gb/s 3.5-inch 64mb Cache Hdd For Security - Hard Disk Drive - AliExpress