 "WD 1TB AV SATA 6Gb s 3.5" Internal Hard Drive - 64MB Cache"@en Cache (WD10PURZ)"@en
 "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 