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Silver 3.5 inch internal hard drive with circuit board visible on underside

Western Digital

Western Digital WD40EZAX 4TB 5400 RPM 256MB 3.5" SATA internal hard drive

SKU CH-35WD-XQQ5N MPN WD40EZAX

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

  • InterfaceSATA 6.0Gb/s
  • Capacity4TB
  • Recording TechnologyCMR
  • RPM5400 RPM
  • Cache256MB
  • UsageFor Daily Computing

Options 4TB 256MB Cache

  • 4TB capacity stores large media libraries and backups
  • CMR recording technology provides consistent write performance
  • 256MB cache improves data access speed for daily tasks
  • NoTouch Ramp Load technology reduces wear and protects data during transport
  • Low power consumption with advanced power management saves energy

WD Blue 4TB Desktop Drive

The WD Blue WD40EZAX is a 4TB 3.5-inch internal hard drive built for everyday desktop computing. It connects via a SATA 6.0Gb/s interface and uses CMR recording technology with a 256MB cache.

Suits general storage and backups

This drive suits users who need large, affordable capacity for documents, media libraries and system backups. It is not for workloads that demand sustained high throughput or low-latency random access such as active video editing or database serving.

5400 RPM spindle speed

The 5400 RPM rotation rate determines the drive's sustained transfer rate and access latency. If your workflow requires faster sequential speeds or quicker response times, a higher-RPM drive or solid-state storage would be more appropriate.

Helstu kostir

  • 4TB capacity stores large media libraries and backups
  • CMR recording technology provides consistent write performance
  • 256MB cache improves data access speed for daily tasks
  • NoTouch Ramp Load technology reduces wear and protects data during transport
  • Low power consumption with advanced power management saves energy

Tæknilýsing

BrandWD
SeriesBlue
ModelWD40EZAX
InterfaceSATA 6.0Gb/s
Capacity4TB
Recording TechnologyCMR
RPM5400 RPM
Cache256MB
UsageFor Daily Computing
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Sendingarþyngd0.57 kg
Stærð sendingar152 × 102 × 32 mm

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Will the 3.5" SATA 6.0Gb/s drive fit and work in my older desktop that only has SATA 3Gb/s ports?

Yes, the drive is backward compatible with SATA 3Gb/s ports; it will operate at the slower 3Gb/s speed while retaining its 4TB capacity and 256MB cache.

How can I verify the 5400 RPM CMR drive is healthy after installing it?

Run the manufacturer's Data Lifeguard Diagnostic tool to perform a quick and extended SMART test; a pass result confirms the drive is functioning as intended.

Does the retail box include a SATA data cable and mounting screws for the 3.5" form factor?

The drive ships in retail or OEM packaging that may vary; cables and screws are typically not included and must be purchased separately if your case does not supply them.

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