 "WD 1TB 3.5" SATA Surveillance Storage Purple Hard Drive for CCTV DVR NVR & HOME PC System -WD10PURZ"@en
 Specification 1TB Model Number WD10PURZ Formatted capacity 1TB Form factor 3.5 inch Advance format (AF) Yes Interface transfer rate (max)   Buffer to host 6 Gb/s Host to/from drive (sustained) 110 MB/s Cache (MB) 64 Performance class / Rotational speed (RPM) 5400 RPM Class Weight (kg) 0.45
 "WD Purple 2TB 3.5" SATA3 HD CCTV HDD/Hard Drive WD20PURZ"@en WD20PURZ LN82090 | SCAN UK"@en
"2TB WD Purple WD20PURZ, 3.5" AV Surveillance HDD, SATA III - 6Gb/s, 5400rpm, 64MB Cache, NCQ, OEM                   "@en 