HGST Z5K500‑250 (0J42472)
 250GB, 5400RPM, 2.5‑inch, 7mm SATA 6Gb/s
Laptop‑Class Hard Drive with 8MB cache,
512e Formatting, and Optional Self‑Encrypting Drive (SED) 
Support for Secure Mobile Storage.

✅ Core Specifications

All major listings confirm the following specs for part 0J42472:
  • Capacity: 250GB 
  • Form factor: 2.5‑inch, 7mm thickness
  • Spindle speed: 5400 RPM
  • Interface: SATA III (6Gb/s)
  • Cache: 8MB
  • Sector format: 512e (Advanced Format)
  • Average seek time: 13ms
  • Weight: 93g
  • Dimensions: 70mm × 100mm × 7mm

🔐 Security Features (SED Models)

The Z5K500 series includes self‑encrypting drive (SED) variants that use HGST Bulk Data Encryption (BDE) .
Key points:
  • Real‑time hardware encryption
  • Protected key management
  • Simplifies secure drive repurposing
  • Designed for enterprise and mobile security needs
Not all Z5K500‑250 units are SED; availability depends on the specific sub‑model.

🧩 Series Characteristics

The Z5K500 line is known for:
  • Low power consumption and eco‑friendly, halogen‑free design
  • Single‑platter construction for reduced weight and vibration
  • Mobile‑optimized performance for laptops and embedded systems

📦 Typical Use Cases

This drive is best suited for:
  • Laptops and notebooks
  • Small‑form‑factor PCs
  • Embedded/industrial systems
  • Enterprise environments needing low‑power SATA storage
  • Legacy systems requiring 512e compatibility
It is not intended for high‑performance workloads due to its 5400RPM speed and 8MB cache.

🔁 Equivalent / Related Part Numbers

Useful for compatibility or cross‑reference:
  • HTS545025A7E330
  • HTS545025A7E385
  • Z5K500‑250
  • Other OEM‑specific variants may appear in enterprise systems.

📊 Specification Table

Feature
Value

Capacity
250GB
RPM
5400RPM
Interface
SATA 6Gb/s
Cache
8MB
Sector Format
512e
Form Factor
2.5-inch (7mm)
Seek Time
13ms

✅ What to Check Before Buying

  • Whether you need SED encryption
  • Whether the drive is new or refurbished
  • Compatibility with your laptop (especially 7mm height)
  • Whether a modern SSD upgrade would offer better performance
 
New in Box
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Shipped with Standard Shipping.





 SHIPPING

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RETURNS


When returning an item please include all packaging tags etc. that were included with the product. All items must be returned in the condition they were received. Sealed items that have been opened or items that have been used are not eligible for a return. Returns are accepted on most items, please check the individual listing for details.