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Silver 3.5 inch SATA hard drive with circuit board visible

Western Digital

Western Digital WD40EZAZ 4TB 5400 RPM 256MB SATA 3.5" internal hard drive

SKU CH-JG1P-ZWB5B MPN WD40EZAZ

A 4TB 3.5-inch SATA desktop hard drive with 5400 RPM and 256MB cache for everyday computing

  • InterfaceSATA 6.0Gb/s
  • Capacity4TB
  • Recording TechnologySMR
  • RPM5400 RPM
  • Cache256MB
  • FeaturesTested For Compatibility We perform tests on hundreds of sys
  • 4TB capacity stores large media libraries and backups
  • 256MB cache improves read responsiveness for everyday desktop tasks
  • SATA 6.0Gb/s interface connects to standard motherboard ports
  • 5400 RPM spindle speed keeps power draw low
  • 5 inch form factor fits typical desktop drive bays

WD Blue 4TB desktop drive for everyday computing

This 3.5 inch internal hard drive is built for daily office and web workloads. It fits standard desktop bays and connects through a SATA 6.0Gb/s interface. The 4TB capacity suits primary storage in home or office PCs.

SMR recording technology shapes write behaviour

The drive uses Shingled Magnetic Recording to reach 4TB at this price point. Sequential reads run at 5400 RPM with 256MB cache, while sustained random writes slow once the cache fills. Buyers needing consistent write throughput for databases or video capture should consider a CMR alternative.

Four terabytes hold large media libraries

The 4TB volume comfortably stores photo collections, documents and local backups with room to spare. Performance drops when the drive is pushed past its cache buffer during heavy multi-tasking or large-file shuffling. It is not suited for high-write NAS arrays or constant surveillance recording.

商品特色

  • 4TB capacity stores large media libraries and backups
  • 256MB cache improves read responsiveness for everyday desktop tasks
  • SATA 6.0Gb/s interface connects to standard motherboard ports
  • 5400 RPM spindle speed keeps power draw low
  • 5 inch form factor fits typical desktop drive bays

商品規格

BrandWD
SeriesBlue
ModelWD40EZAZ
InterfaceSATA 6.0Gb/s
Capacity4TB
Recording TechnologySMR
RPM5400 RPM
Cache256MB
FeaturesTested For Compatibility
We perform tests on hundreds of systems and a multitude of platforms in our F.I.T. Lab to give our customers confidence that our drives will work in their systems.
Low Power Consumption
State-of-the-art seeking algorithms and advanced power management features help ensure low power consumption.
NoTouch Ramp Load Technology
Safely positions the recording head off the disk surface to protect your data.
Upgrading Your Drive is Easy
Seamlessly migrate your current system to your new Western Digital drive using Acronis True Image WD Edition cloning software, avail
UsageFor Daily Computing
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
出貨重量0.54 kg
包裝尺寸222 × 152 × 74 mm

商品問答

How does the 5400 RPM spindle speed affect everyday desktop performance?

The 5400 RPM rotation provides reliable throughput for office tasks, web browsing and bulk file storage, while keeping power draw and noise lower than faster desktop drives.

What does the SATA 6.0Gb/s interface limit in actual use?

The SATA 6.0Gb/s link caps the maximum burst transfer at 6.0Gb/s; sustained read and write speeds will be lower and are governed by the drive's 5400 RPM mechanics and 256MB cache.

Will the 26.10mm height fit a standard 3.5-inch drive bay?

Yes, the 26.10mm height matches the standard 3.5-inch form factor, so it mounts in any desktop bay or tray designed for 3.5-inch drives.

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