Western Digital WD Red Pro 4TB HDD 3.5" SATA 128MB WD4002FFWX 7200 RPM CCTV
WD4002FFWX Technical Specifications. Model Number WD4002FFWX. Rotational Speed 7200 RPM. Interface SATA 6 Gb/s. Series WD Red Pro. Any issues that cannot be resolved with technical support may be covered under warranty.