By Bestbuy.com

Western Digital - WD Black 4TB 3.5" Internal Hard Drive - SATA - 7200 RPM - 64 MB Buffer (WD4003FZEX)

The WD Black 4TB 3.5" Internal Hard Drive (WD4003FZEX) is designed for high-performance computing, offering substantial storage capacity and fast data transfer rates. With a 7200 RPM rotational speed and a 64 MB cache, it ensures efficient data access. The drive is built to endure operating shocks up to 30 Gs and non-operating shocks up to 300 Gs, while maintaining quiet operation with noise levels averaging 29 dBA during idle and 34 dBA during seek modes.