Western Digital 4TB WD Red NAS Internal Hard Drive HDD – 5400 RPM, SATA 6 Gb/s, SMR, 256MB Cache, 3.5″ – WD40EFAX
Price range: £28.91 through £99.99Make sure this fits by entering your model number.
Available in capacities ranging from 2-6TB with support for up to 8 bays
5400RPM performance class