Western Digital 4TB WD40EZAX 5400RPM 256MB SATA 6Gb/s 3.5 in Internal Hard Drive
WD Blue 3.5" PC Hard Drive - 4TB. Massive capacities up to 4TB available. Formatted Capacity 4TB. Rotational Speed 5400RPM. Buffer 256 MB Cache. They are ideal for use as primary drives in desktop PCs and for office applications.