500GB Seagate Barracuda Pro 2.5-inch 7200RPM SATA III 6Gbps 128MB Cache Internal Hard Drive
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Amazon.com: MaxDigitalData 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for NAS Network Storage (MD8000GSA25672NAS) - 3 Years Warranty : Electronics