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Rectangular silver 2.5 inch laptop hard drive with circuit board visible on underside

Toshiba

Toshiba MK3261GSYN 320GB 7200 RPM 16MB SATA 3.0Gb/s 2.5" laptop hard drive

SKU CH-6HNB-29VJG MPN MK3261GSYN

A 320 GB 2.5" laptop hard drive spinning at 7200 RPM with 16 MB cache and a SATA 3.0Gb/s interface

  • Total capacity320 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeRetail
  • Cache memory16 MB
  • Average seek time12 ms
  • 7200 RPM spindle for quicker data access
  • 16 MB cache reduces read latency
  • SATA 3.0 Gb/s interface for broad compatibility
  • 320 GB capacity stores large media libraries
  • 5 inch 9.5 mm form factor fits most laptops

320GB 2.5" SATA Notebook Drive

The Toshiba MK3261GSYN is a 320GB internal hard drive built for 2.5-inch laptop bays. It connects through a SATA 3.0Gb/s interface and spins at 7200 RPM with a 16MB cache. The drive measures 9.5mm in height, 69.75mm in width and 100.3mm in length.

Suits older laptops needing a 9.5mm drive.

This drive fits standard 9.5mm drive bays found in many older notebooks and some external enclosures. Buyers whose systems require a 7mm or thinner drive cannot use this model. It is also unsuitable for anyone needing a solid-state drive or a larger capacity than 320GB.

9.5mm height decides fit

The 9.5mm maximum height is the critical dimension that determines whether this drive will seat correctly in a specific laptop or enclosure. Verify the bay clearance before ordering, as many modern slim devices only accept 7mm drives.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $108.99
Pricier than about 69% of the 645 comparable items (median $66.99).
Total capacity 320 GB
Typical for this category: the median of 419 items is 320 GB.
Price per TB $340.59 per TB
Pricier than about 65% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameTOSHIBA
Model nameMK3261GSYN
Total capacity320 GB
Performance
Average seek time12 ms
Mean latency4.16 ms
Rotational speed7,200 RPM
Storage
Cache memory16 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height9.5 mm
Maximum width69.75 mm
Maximum length100.3 mm
Shipping weight0.48 kg
Package size102 × 76 × 13 mm

Questions about this item

Will the 9.5 mm height fit my laptop's 2.5 inch bay?

The drive is 9.5 mm tall, 69.75 mm wide and 100.3 mm long, matching the standard 2.5 inch internal form factor used in most laptops.

Does the SATA 3.0Gb/s connector need any adapter or bracket to install?

It plugs directly into a standard SATA data and power socket; the only common mistake is forgetting to secure the drive with the laptop's mounting screws after connection.

How often should I check the 16 MB cache or 7200 RPM motor for wear?

No scheduled cache or motor service is required; run SMART diagnostics periodically and replace the drive if reallocated sectors or seek errors appear.

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