3.5" HDD 4.0TB-SATA- 256MB Western Digital "Purple (WD43PURZ)", Surveillance, CMRCapacitate memorie: 4 TB Sistem de stocare a datelor: 3.5" Interfa?a SSD: SATA-3 (6 Gb/s) Dimensiune memorie tampon (cache): 256 MB Viteza axului: 5400 RPM Rata de transfer : 180 MB/s