Click or scroll to zoom Tap or pinch to zoom 4TB Red Pro NAS HD SATA 6Gb by WD Bulk $289.99 SKU WD4003FFBXSP 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Red Pro NAS Hard Drive WD4003FFBX - hard drive - 4 TB - SATA 6Gb/s Specs. 3.5-inch form factor. 217 MB/s. 7200 RPM Class. SINGLE PACK