WD Red WD40EFRX 4 TB 3.5" Internal Hard Drive - SATA
Storage Capacity: 4 TB
Features: IntelliPower
Maximum External Data Transfer Rate: 768 MB/s (6 Gbit/s)
Spindle Speed (rpm): 5400
Buffer: 64 MB
Drive Interface: SATA
Drive Interface Standard: SATA/600
Drive Type: Internal
Drive Width: 3.5"
Height: 1.03" (26.11 mm)
Width: 4" (101.60 mm)
Depth: 5.79" (146.99 mm)
Weight (Approximate): 635 g