This is an SSD drive with a 4 TB storage capacity. The form factor is 2.5" the most common for SSD drives.
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Kingston Data Centre DC500M(SEDC500M/3840G) Enterprise Solid-State Drives -SSD 2.5” 3840GB
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Kingston 3.84TB DC500M 2.5 SATA 6Gb/s SSD
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Kingston 3.84TB (3840GB) DC500M SSD 2.5 Inch 7mm, SATA 3.0 (6Gb/s), 555MB/s R, 520MB/s W