Western Digital Caviar Green WD5000AACS 500GB 5400 to 7200 RPM 16 MB Cache SATA 3.0 Gb/s Hard Drive. RPM :5400 to 7200 RPM. Western Digital. 8/16 MB cache buffer 8.9 ms average read seek. Features high quality/tier 1 High Speed 500 GB Internal Hard Drive.
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