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4TB Expansion Drive for
WD Sentinel DX4000
Upgrade the storage capacity on your WD Sentinel small office storage server.


Upgrade the storage capacity on your WD Sentinel small office storage server. This drive kit contains one HDS5C4040ALE630 drive.

Expansion Kit Contents
  • One HDS5C4040ALE630 drive
  • Instructions flyer

    Approved drive models
    For a List of Compatible Hard Drives for WD Sentinel DX4000, visit and reference Knowledge Base #9443.

    Compatible with WD Sentinel DX4000 16 TB (WDBLGT0160KBK-NESN)

  • Features
    4 TB of storage
  • Advanced Power Management – Reduces power during idle periods
  • HiVert™ technology – Excellent power efficiency
  • CoolSpin™ motor design – Requires low peak power enabling more cost-effective and cooler power supplies
  • Acoustics
    Excellent acoustics. Ultra-quiet operation
  • Thermal Fly-height Control (TFC) − Better soft error rate for improved reliability and performance
  • Head load/unload ramp − Protect disk during non-operation
  • SMART Command Transport (SCT) – Adaptive error correction
  • LDPC and CRC protection – Data integrity enhanced through circuits
  • Internal thermal sensor – Improves data integrity

  • Specifications
    Physical Dimensions
    Height 1.0 Inches
    Depth 5.8 Inches
    Width 4.0 Inches
    Weight 1.52 Pounds
    Height26.1 mm
    Depth 147.3 mm
    Width101.6 mm
    Weight 0.69 kg

    *Receive free standard shipping (UPS Ground) on purchases over $100 (excluding tax and shipping charges) at the WD Store. Offer not valid for addresses in Hawaii or Alaska. The WD Store reserves the right to change or discontinue this offer at any time.