Western Digital Blue WD2500AAJB 250GB 7200 RPM 8MB Cache IDE Ultra ATA100 / ATA-6 3.5" Internal Hard Drive Bare Drive for PC, Mac, CCTV, Tivo, DVR, NAS, RAID- 1 Year Warranty Model: WD2500AAJB Capacity: 250GB RPM: 7200 Cache: 8MB 1-Year Warranty