1TB 2TB HDD 4TB 6TB 8TB WD Purple Hard Disk Internal 1-10TB 3.5 64MB SATAIII HD 

Description:

WD Purple Surveillance HDD — 1TB, 2TB, 4TB, 6TB & 8TB options. 3.5" SATA III, 5400RPM, 64MB Cache, designed for CCTV DVR/NVR systems. Reliable storage for continuous surveillance recording.