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Western Digital Blue 500GB Desktop Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 32MB Cache 3.5" - WD5000AZLX : Amazon.ca: Electronics
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What is the difference between the WD Colours – Blue, Red, Black, Green, Purple and Gold – NAS Compares
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Western Digital 1TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD10PURZ : Amazon.ca: Electronics
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