Seagate 500GB BarraCuda SATA 6Gb s 2.5" 7mm Internal Hard Drive (ST500LM030)
Seagate 3.5'' 500gb Sata 3gb/s 5900rpm Video Surveillance Hdd Internal Hdd Mechanical Hard Disk 16mb Buffer For Desktop Pc - Hard Disk Drive - AliExpress
Amazon.com: Seagate Pipeline HD 500GB 5900RPM 8MB Cache SATA 3.0Gb/s 3.5in Internal Hard Drive - ST3500312CS (for Surveillance System, CCTV DVR) - 3 Year Warranty (Renewed) : Electronics