WD 4TB WD40EFPX-68C6CN0 Red Plus SATA III 6 Gb/s 3.5" Internal NAS HDD 256MB

Available Capacities: 

4TB HDD & 128MB Cache For MVR 4020

4TB HDD & 256MB Cache For MVR 4175

2TB HDD & 64MB Cache For MVR 2875

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Compatibility:  RAID-optimized NAS systems with up to 8 bays

Dimension:  5.787" x 4" x 1.028"

Product Weight:  1.26lbs

Interface:  SATA

Transfer Rate:  up to 180MB/s