![Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics](https://m.media-amazon.com/images/I/71giWLo+PFL._AC_SX466_.jpg)
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics
![What is Difference Between WD Hard Disk Blue, Black, Green, Purple, Red & Gold by PK Expert - YouTube What is Difference Between WD Hard Disk Blue, Black, Green, Purple, Red & Gold by PK Expert - YouTube](https://i.ytimg.com/vi/iGG_LWDHtX8/maxresdefault.jpg)
What is Difference Between WD Hard Disk Blue, Black, Green, Purple, Red & Gold by PK Expert - YouTube
![What is the difference between the WD Colours – Blue, Red, Black, Green, Purple and Gold – NAS Compares What is the difference between the WD Colours – Blue, Red, Black, Green, Purple and Gold – NAS Compares](https://i.ytimg.com/vi/OBbIGtjdz8s/hqdefault.jpg)
What is the difference between the WD Colours – Blue, Red, Black, Green, Purple and Gold – NAS Compares
![WD Blue vs. Black vs. Green Hard Drive Comparison – What's the Difference? | GamersNexus - Gaming PC Builds & Hardware Benchmarks WD Blue vs. Black vs. Green Hard Drive Comparison – What's the Difference? | GamersNexus - Gaming PC Builds & Hardware Benchmarks](https://www.gamersnexus.net/media/k2/items/cache/2a0df9277911439bde7e4716ad3762e7_M.jpg)