![Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics](https://m.media-amazon.com/images/I/8169mVY5F4L._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics
![WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX - Walmart.com WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX - Walmart.com](https://i5.walmartimages.com/seo/WD-Red-10TB-NAS-Hard-Disk-Drive-5400-RPM-Class-SATA-6Gb-s-256MB-Cache-3-5-Inch-WD100EFAX_3f2cdcd2-7b45-4de6-b47f-df288b5deedc_1.00a18180d5f3845f753268e2e1267df6.jpeg)
WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX - Walmart.com
![Buy the Western Digital WD Red WD40EFRX 4.0TB NAS Hard Drive P/N WD40EFRX-68N32N0 - Tested | GoodwillFinds Buy the Western Digital WD Red WD40EFRX 4.0TB NAS Hard Drive P/N WD40EFRX-68N32N0 - Tested | GoodwillFinds](https://www.goodwillfinds.com/on/demandware.static/-/Sites-goodwill-master/default/dwae2a422c/images/large/dszxajvk8/image/upload/sku/14e3aa9c5fb84e0598f6e68272ea89da.jpeg)
Buy the Western Digital WD Red WD40EFRX 4.0TB NAS Hard Drive P/N WD40EFRX-68N32N0 - Tested | GoodwillFinds
![Amazon.com: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40EFRX (Renewed) : Electronics Amazon.com: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40EFRX (Renewed) : Electronics](https://m.media-amazon.com/images/I/61zRTZekMGL.jpg)
Amazon.com: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40EFRX (Renewed) : Electronics
![WD40EFRX datasheet(1/4 Pages) WESTERN | There?셲 a leading edge WD Red drive for every compatible NAS system to help fulfill your data storage needs. WD40EFRX datasheet(1/4 Pages) WESTERN | There?셲 a leading edge WD Red drive for every compatible NAS system to help fulfill your data storage needs.](https://html.alldatasheet.net/htmldatasheet2/1284773/WESTERN/WD40EFRX/343/1/WD40EFRX.png)
WD40EFRX datasheet(1/4 Pages) WESTERN | There?셲 a leading edge WD Red drive for every compatible NAS system to help fulfill your data storage needs.
![Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics](https://m.media-amazon.com/images/I/71+3EwR3ABL.jpg)
Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics
![Amazon.com: Western Digital WD40EFRX WD Red NAS Hard Drive - Hard drive - 4 TB - internal - 3.5 inch - SATA 6Gb/s - buffer: 64 MB - for WD My Cloud EX2, EX4 : Electronics Amazon.com: Western Digital WD40EFRX WD Red NAS Hard Drive - Hard drive - 4 TB - internal - 3.5 inch - SATA 6Gb/s - buffer: 64 MB - for WD My Cloud EX2, EX4 : Electronics](https://m.media-amazon.com/images/I/516ATVgjPOS.jpg)
Amazon.com: Western Digital WD40EFRX WD Red NAS Hard Drive - Hard drive - 4 TB - internal - 3.5 inch - SATA 6Gb/s - buffer: 64 MB - for WD My Cloud EX2, EX4 : Electronics
![Western+Digital+Red+Plus+%285400RPM%2C+3.5%22%2C+SATA+III%2C+64MB+Cache%29+4TB+Internal+Enterprise+Drive+-+ WD40EFRX for sale online | eBay Western+Digital+Red+Plus+%285400RPM%2C+3.5%22%2C+SATA+III%2C+64MB+Cache%29+4TB+Internal+Enterprise+Drive+-+ WD40EFRX for sale online | eBay](https://i.ebayimg.com/images/g/1msAAOSwTK9kxIsg/s-l400.jpg)
Western+Digital+Red+Plus+%285400RPM%2C+3.5%22%2C+SATA+III%2C+64MB+Cache%29+4TB+Internal+Enterprise+Drive+-+ WD40EFRX for sale online | eBay
![Amazon.com: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40EFRX (Renewed) : Electronics Amazon.com: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40EFRX (Renewed) : Electronics](https://m.media-amazon.com/images/I/81Ssfzxf1RL.jpg)