Western Digital Red Pro internal hard drive 4 TB 7200 RPM 256 MB 3.5 Serial ATA

Certification: BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL | Depth: 147 mm | Warnings: Do not open or disassemble. | Warnings: Do not drop and avoid strong impacts. | Storage drive buffer size: 256 MB | Width: 101.6 mm | 24/7 operation: Yes | HDD size: 3.5" | Mean time between failures (MTBF): 2500000 h | Operating temperature (T-T): 0 - 65 °C | Quantity per pack: 1 pc(s) | Interface: Serial ATA | Warnings: Do not expose to high temperatures or moisture. | Type: HDD | HDD capacity: 4 TB | Weight: 670 g | Component for: NAS | Height: 26.1 mm | Storage temperature (T-T): -40 - 70 °C | HDD speed: 7200 RPM