![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/W/MEDIAX_792452-T2/images/I/8169mVY5F4L._AC_UF894,1000_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
![WD40EFRX - Used - WESTERN DIGITAL 4.0TB 5.4K RPM CLASS SATA 3.5 INCH LARGE FORM FACTOR LFF WD RED NASWARE 3.0 ADVANCED FORMAT AF 6GB/S SATA3 64MB CACHE HARD DRIVE ( 4000GB / 4TB ) WD40EFRX - Used - WESTERN DIGITAL 4.0TB 5.4K RPM CLASS SATA 3.5 INCH LARGE FORM FACTOR LFF WD RED NASWARE 3.0 ADVANCED FORMAT AF 6GB/S SATA3 64MB CACHE HARD DRIVE ( 4000GB / 4TB )](https://www.itcreations.com/images/products/large/WD40EFRX.jpg?962017)
WD40EFRX - Used - WESTERN DIGITAL 4.0TB 5.4K RPM CLASS SATA 3.5 INCH LARGE FORM FACTOR LFF WD RED NASWARE 3.0 ADVANCED FORMAT AF 6GB/S SATA3 64MB CACHE HARD DRIVE ( 4000GB / 4TB )
![Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/71n++WwxSnL.jpg)
Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics
![Western Digital 4TB WD Red SN700 NVMe SSD, Internal Solid State Drive for NAS Devices - WDS400T1R0C - Walmart.com Western Digital 4TB WD Red SN700 NVMe SSD, Internal Solid State Drive for NAS Devices - WDS400T1R0C - Walmart.com](https://i5.walmartimages.com/asr/1f405fc6-6b23-4fb5-94ec-78abed606f3c.33e62a6d3758cf425973c207621345d7.png?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Western Digital 4TB WD Red SN700 NVMe SSD, Internal Solid State Drive for NAS Devices - WDS400T1R0C - Walmart.com
![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/W/MEDIAX_792452-T2/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 (5400RPM, 3.5", SATA III, 128MB Cache) 4TB Internal Enterprise Drive - WD40EFZX for sale online | eBay Western Digital Red Plus (5400RPM, 3.5", SATA III, 128MB Cache) 4TB Internal Enterprise Drive - WD40EFZX for sale online | eBay](https://i.ebayimg.com/images/g/-bcAAOSwpMxlNzuo/s-l1600.jpg)
Western Digital Red Plus (5400RPM, 3.5", SATA III, 128MB Cache) 4TB Internal Enterprise Drive - WD40EFZX for sale online | eBay
![4TB Performance Results - WD Red SA500 Review: 4TB of SSD Storage for Your NAS - Page 2 | Tom's Hardware 4TB Performance Results - WD Red SA500 Review: 4TB of SSD Storage for Your NAS - Page 2 | Tom's Hardware](https://cdn.mos.cms.futurecdn.net/UJcBYKiBwsq7S4fYhuDbrS.jpg)
4TB Performance Results - WD Red SA500 Review: 4TB of SSD Storage for Your NAS - Page 2 | Tom's Hardware
Western Digital Red WDS400T1R0A 4 TB Solid State Drive 2.5 Internal SATA SATA600 2500 TB TBW 560 MBs Maximum Read Transfer Rate 5 Year Warranty - Office Depot
![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-4TB-NAS-Hard-Disk-Drive-5400-RPM-Class-SATA-6Gb-s-64MB-Cache-3-5-Inch-WD40EFRX_3b1dd907-099a-4f9c-86cb-503ac7813cb6_1.4aa81510baf6604269e9538c2f2e7ff1.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)