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Toshiba 3TB Internal Hard Disk Drive - 3.5 Form Factor, SATA III 6 Gb/s, 7200RPM, 64MB Buffer - HDKPC08 at TigerDirect.com
Seagate BarraCuda ST3000DM008 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive - Newegg.com
Western Digital Red Pro 3TB 7200RPM SATA 6Gb/s 64MB Cache 3.5" Enterprise Class Hard Drive - WD3001FFSX - Drive Solutions
TOSHIBA 3TB HDD HD 7200RPM 3.5" 64MB 3000GB 3000G SATA3 Internal Hard Disk Drive for Desktop PC|3tb hdd|internal hard disk drivehard disk drive - AliExpress