HGST Ultrastar 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for PC, Mac, NAS, RAID, Surveillance System) - 3 Year Warranty - Walmart.com
Amazon.com: SEAGATE TECHNOLOGY ST4000NM0023 HDD 4TB 7200RPM SAS 128MB 5 YEAR WAR 20-BOX : Electronics
WD Red Pro NAS Internal Hard Drive HDD 3.5 | Western Digital
WD Black Performance 4TB 7200RPM SATA III 6Gb/s 3.5" Internal Hard Drive - Micro Center
Dell 4TB 7200 RPM SATA Enterprise 6Gbps 3.5in Hard Drive | Dell USA
TOSHIBA X300 4TB Desktop Hard Drive 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Retail Packaging HDWE140XZSTA - Newegg.com
Seagate Brand 4TB Desktop PC 3.5" Internal Mechanical Hard disk SATA 6Gb/s HDD 7200 RPM 128MB Buffer Internal Hard Drives|Internal Hard Drives| - AliExpress
HGST HUS726T4TALE6L4 Ultrastar 4TB 7200 RPM 512e SATA 6Gb/s 3.5-Inch Internal Hard Disk Drive - Walmart.com
0F27001 – EMC 4TB 7200 RPM SAS 3.5″ HDD for VNX5100, 5200, 5300, 5400, 5500, 5600, 5700, 5800, 7500, 7600, 8000, VNXe3300 – Disk Drive Finder
MaxDigitalData MD4000GSA6472DVR 4TB 7200RPM 64MB Cache SATA III (6.0Gb/s) (Surveillance Storage) 3.5" Internal Hard
Seagate Enterprise Capacity 3.5'' HDD 4TB 7200 RPM 512e SATA 6Gb/s 128MB Cache Internal Hard Drive ST4000NM0115 - Newegg.com