OVERVIEW :
Model: WD Blue 4 TB, typically referred to as WD40EZAX for the 256 MB cache
Interface: SATA III (6 Gb/s) .
Form Factor: 3.5‑inch .
Speed: 5400 RPM .
Cache: Available in 256 MB and 64 MB configurations .
Transfer Rate: Up to approximately 180–185 MB/s .
Technology Highlights: Features NoTouch Ramp Load technology (protects recording head/media) and low power consumption design. WD also provides free Acronis True Image WD Edition cloning software .
Use Case: Optimized for everyday computing—ideal for desktop storage, office applications, media libraries, backups, and additional storage
 
WARRANTY DETAILS :
Standard Warranty: The WD Blue HDD line comes with a 2-year limited warranty across most regions .
Brand-Wide Policy: The WD Blue series consistently carries a 2-year warranty as part of the company’s color-coded strategy (e.g., WD Purple for 3 years, Red/Black for higher tiers).
Checking Warranty: You can verify warranty status, initiate replacements, or check coverage online via Western Digital’s warranty portal.