
Amazon.com: Western Digital 6TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5,

Western Digital 6TB WD Red Plus NAS 內建硬碟- 5400 RPM,SATA 6 Gb/s,CMR,256 MB 快取記憶體,3.5 吋-WD60EFPX : 電子 - Amazon.com,
![Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] : Electronics Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] : Electronics](https://m.media-amazon.com/images/I/71BM7cpzUOL.jpg)
Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] : Electronics,

Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5,

Amazon.com: Western Digital 6TB WD Red Plus NAS Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5