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Silver 2.5 inch bare laptop hard drive, 7mm thin

HGST

HGST Travelstar Z5K320 0A78602 250GB 5400 RPM laptop hard drive

SKU CH-APDK-XBXFV MPN 0A78602

A 7 mm, 5400 RPM 2.5-inch SATA laptop drive delivering 250 GB capacity with 8 MB cache and low 1.6 W read/write power for longer battery life

  • PackagingBare Drive
  • InterfaceSATA 3.0Gb/s
  • Capacity250GB
  • Cache8MB
  • Average Seek Time13ms
  • Average Latency5.5ms
  • 7mm z-height enables thinner laptop designs
  • 6W read/write power extends battery life
  • 55W idle power increases unplugged usage time
  • 400G operating shock protects data from drops
  • 5400 RPM with 8MB cache delivers quiet performance

Thin 7mm laptop drive

The HGST Travelstar Z5K320 is a 2.5-inch internal hard drive with a 7mm z-height, 250GB capacity and 5400 RPM spindle speed. It connects via SATA 3.0Gb/s and includes an 8MB cache. The slim profile allows installation in thinner notebook chassis and other compact devices.

Low power and shock rating

The drive draws 1.6W during read and write operations and 0.55W at idle, helping to extend battery life in portable systems. A 400G operating shock rating adds robustness for mobile use, while the manufacturer highlights near-silent acoustics for quiet environments.

Bare drive installation notes

The product ships as a bare drive without cables, brackets or mounting screws. Installers must reuse existing hardware or source compatible fixings separately. The 7mm thickness fits standard 9.5mm bays but may require a spacer for secure mounting in some laptops.

Not for high-performance or high-capacity needs

Buyers who want faster access times or larger single-drive capacities should consider solid-state alternatives or higher-capacity mechanical drives. Systems requiring a 9.5mm drive without a spacer or a drive with included mounting hardware are not addressed by this bare unit.

Highlights

  • 7mm z-height enables thinner laptop designs
  • 6W read/write power extends battery life
  • 55W idle power increases unplugged usage time
  • 400G operating shock protects data from drops
  • 5400 RPM with 8MB cache delivers quiet performance

Specifications

BrandHGST
SeriesTravelstar Z5K320
ModelHTS543225A7A384 (0A78602)
PackagingBare Drive
InterfaceSATA 3.0Gb/s
Capacity250GB
Cache8MB
Average Seek Time13ms
Average Latency5.5ms
RPM5400 RPM
FeaturesNew 7mm z-height for greater design flexability
1.6W read/write power - Low energy use and long battery life for
0.55W low power idle - more "unplugged" notebook time
400G operating shock - Robust design to help protect against bumps and
1000G non-operating shock - rough handling
TrueTrack technology - Prevents slow performance or errors in high shock or vibration environments
Improved acoustics - Quieter for a richer audio-listening experience for music, movies and games
Up to 994Mb/s media transfer rate - Fast downloads and excellent application performance
SATA 3Gb/s - Fast data t
Form Factor2.5"
Shipping weight0.91 kg
Package size114 × 76 × 13 mm

Questions about this item

How often will the 8 MB cache need replacement during the drive's life?

The 8 MB cache is built into the drive's controller board and has no separate replacement schedule; it lasts for the operational lifetime of the unit.

What is the first limit reached when the 5400 RPM drive runs sustained workloads?

The SATA 3.0 Gb/s interface caps maximum throughput, so sustained transfers hit the bus ceiling before the 13 ms seek time or 5.5 ms latency become bottlenecks.

How much heat and noise does the 2.5 inch drive produce when running all day?

It draws 1.6 W during read/write and 0.55 W at idle, while the manufacturer rates acoustics as near-silent for continuous operation.

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