Difference between WD40EFRX-68N32N0 and WD40EFRX-68WTONO - Desktop & Mobile Drives - WD Community
WD WD40EFRX-68N32N0 - 4TB 5.4K SATA 6.0Gbps 3.5" 64MB Cache Hard Drive
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
WD40EFRX-68N32N0 0002001P Apollo Firmware Downloads