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Silver 2.5 inch laptop hard drive bare drive SATA interface refurbished condition

Seagate

Seagate ST9250421ASG 250GB 7200 RPM SATA 3.0Gb/s 2.5" laptop hard drive

SKU CH-QQSD-36XGW MPN ST9250421ASG

A 250 GB 2.5″ laptop hard drive spinning at 7200 RPM over SATA 3.0Gb/s with free-fall protection

  • PackagingBare Drive
  • InterfaceSATA 3.0Gb/s
  • Capacity250GB
  • RPM7200 RPM
  • FeaturesFree Fall Protection
  • Form Factor2.5"
  • 7200 RPM spindle delivers faster data access
  • 250 GB capacity stores ample documents and media
  • 16 MB buffer smooths read and write bursts
  • Free Fall Protection guards data against drops
  • 5 mm height fits standard 2.5" laptop bays

250 GB 2.5″ SATA laptop drive

This 250 GB Seagate ST9250421ASG is a 2.5″ internal hard drive built for notebooks that accept a 9.5 mm SATA 3.0 Gb/s device. It spins at 7200 RPM and includes a 16 MB buffer for everyday workloads. The refurbished unit ships as a bare drive without cables or brackets.

Free Fall Protection for mobile use

The G‑Force Protection feature parks the heads when sudden motion is detected, reducing the risk of damage from drops or bumps. This hardware safeguard operates automatically and requires no extra software or configuration. It helps preserve data during typical laptop transport.

9.5 mm height fits standard bays

At 9.5 mm thick, 69.75 mm wide and 100.3 mm long, the drive matches the common 2.5″ notebook form factor and connects via a standard SATA data and power connector. The bare‑drive packaging means you reuse existing mounting hardware in the target system. A 90 day limited warranty covers the refurbished unit.

Highlights

  • 7200 RPM spindle delivers faster data access
  • 250 GB capacity stores ample documents and media
  • 16 MB buffer smooths read and write bursts
  • Free Fall Protection guards data against drops
  • 5 mm height fits standard 2.5" laptop bays

Specifications

BrandSeagate
ModelST9250421ASG
PackagingBare Drive
InterfaceSATA 3.0Gb/s
Capacity250GB
RPM7200 RPM
FeaturesFree Fall Protection
Form Factor2.5"
Height (maximum)9.5mm
Width (maximum)69.75mm
Length (maximum)100.3mm
Shipping weight0.11 kg
Package size102 × 70 × 13 mm

Questions about this item

Will the 16 MB buffer need any maintenance or replacement over time?

No, the 16 MB buffer is a solid-state cache on the controller board with no moving parts and requires no servicing.

What limit appears first during sustained transfers on the SATA 3.0 Gb/s link?

The 300 MB/s interface ceiling is reached before the 7200 RPM platters can sustain higher throughput.

How much noise, heat or power should I expect when the drive runs all day in a laptop?

The 2.5 inch, 9.5 mm form factor keeps power draw low and heat modest; the G-Force protection parks heads instantly if vibration spikes.

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