NeweggBusiness - TOSHIBA X300 Pro HDWR440XZSTB 4TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
Amazon.com: Toshiba X300 PRO 4TB High Workload Performance for Creative Professionals 3.5-Inch Internal Hard Drive – Up to 300 TB/Year Workload Rate CMR SATA 6 GB/s 7200 RPM 256 MB Cache - HDWR440XZSTB : Electronics
HDWE140UZSVA Toshiba X300 4TB 7200RPM SATA 6Gbps 128MB Cache (512e) 3.5-inch Internal Hard Drive