WD Red Plus 4 TB 5400 Giri/min 256 MB 3.5" Serial ATA III SATA 6 Gb/s WD40EFPX
WD Red Plus WD40EFPX Hard drive. Serial ATA III. 5400 Giri/min. Spindle Speed : 5400 rpm. Buffer Size : 256 MB. Capacity : 4 TB. Interface : SATA 6Gb/s. Form Factor : 3.5".