Western Digital Blue 4TB 5400 RPM Hard Drive

The Western Digital Blue 4TB Internal Hard Drive (model WD40EZZX) is a reliable 3.5-inch desktop HDD designed for everyday computing needs. Built with CMR (Conventional Magnetic Recording) technology, it offers consistent write performance and long-term data integrity, making it a dependable choice for primary storage in desktop PCs and office workstations. Connecting via the SATA 6 Gb/s interface, the drive achieves sequential transfer rates of up to 185 MB/s, enabling reasonably fast file access for documents, media libraries, and general-purpose applications. The 128 MB cache buffer helps manage data flow efficiently during read and write operations, while the 5400 RPM spindle speed strikes a balance between access performance and power consumption. WD's NoTouch Ramp Load technology keeps the recording head off the disk surface during non-operation, reducing mechanical wear on both the head and the platter. This contributes to longer drive life over extended use cycles. Advanced power management and seeking algorithms further help keep energy draw low — an advantage in always-on desktop environments. Western Digital validates this drive across hundreds of system configurations through its FIT Lab compatibility testing programme, providing confidence that the WD40EZZX will integrate smoothly with a wide range of motherboards and platforms. A 2-year limited warranty accompanies the drive. For users migrating from an older drive, Acronis True Image WD Edition software (available as a free download from the Western Digital Support site) allows full system cloning, eliminating the need to reinstall the operating system. Verified Specifications: • Capacity: 4TB • Form Factor: 3.5-inch • Interface: SATA 6 Gb/s • Spindle Speed: 5400 RPM • Cache: 128 MB • Recording Technology: CMR • Max Transfer Rate: up to 185 MB/s • Dimensions (L × W × H): 147 mm × 101.6 mm × 26.1 mm • Operating Temperature: 0°C to 60°C • Non-Operating Temperature: -40°C to 70°C • Warranty: 2 Years