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Small green circuit board 22 by 42 millimetres with gold edge connector and black chips

Dogfish Technology

Dogfish Technology 2242-256GB M.2 2242 SATA internal SSD

SKU CH-HCF4-3CG0F

A compact 256 GB M.2 2242 SATA drive delivering up to 550 MB/s read and 400 MB/s write for laptops and desktops

  • Total capacity256 GB
  • Sequential read speedUp to 550 MB/s
  • Sequential write speedUp to 400 MB/s
  • Interface typeSATA III
  • Form factorM.2 2242
  • Product typeInternal Solid State Drive (SSD)

Capacity 256GB

  • Compact M.2 2242 form factor fits space-constrained laptops and desktops
  • SATA III interface delivers up to 550 MB/s read and 400 MB/s write speeds
  • 3D NAND memory with ECC and bad-block management protects data integrity
  • DevSleep ultra-low power state extends battery life on mobile devices
  • MTBF of 1000000 hours and 0°C to 75°C operating range ensure long-term reliability

256GB SATA M.2 2242 SSD

This 256GB internal solid-state drive uses the M.2 2242 form factor and a SATA III interface. It is built with 3D NAND flash memory and an SMI controller for consumer workloads. The drive measures 22mm wide by 42mm long and weighs 7g.

SATA M.2 slot required; not for PCIe-only sockets

The drive fits laptops and desktops that provide a SATA-based M.2 2242 socket. Systems with PCIe-only M.2 slots cannot use this SATA device. Buyers should verify their motherboard or laptop manual for SATA M.2 support before purchase.

Sequential read up to 550 MBps

Maximum sequential read reaches 550 MBps and sequential write reaches 400 MBps over the SATA III link. These speeds suit OS boot, application loading and general file storage. Performance will not exceed the SATA III interface limit.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $53.99
Cheaper than about 89% of the 1,994 comparable items (median $180.49).
Total capacity 256 GB
Lower than about 80% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 550 MB/s
Lower than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $210.90 per TB
Pricier than about 63% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameTHREE COLOUR DOGFISH
Product line2242-256 GB
Model name2242-256 GB
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 550 MB/s
Sequential write speedUp to 400 MB/s
Storage
NAND flash type3D NAND
Controller chipSMI
Ports & slots
Interface typeSATA III
Size & build
Form factorM.2 2242
Overall height42 mm
Overall width22 mm
Product depth3.2 mm
Product weight7g
Environment & compliance
Operating temperature range0 °C to 75 °C
Storage temperature range-45 °C to 85 °C
Operating humidity range0% ~ 95%
More details
Mean time between failures1,000,000 h

Other versions of this model

5 more in the same range

Questions about this item

Does the Dogfish 2242-256GB come with a mounting screw or adapter, or do I need to buy them separately?

The drive itself is the only component supplied; a mounting screw or M.2 adapter is not included and must be sourced separately if your system requires one.

Why choose the 256 GB SATA III model instead of a larger capacity or a PCIe version?

This 256 GB SATA III unit fits the M.2 2242 slot and delivers up to 550 MB/s read and 400 MB/s write, matching older laptops and small-form-factor PCs that lack PCIe support.

What does the 550 MB/s sequential read figure mean once the drive is installed in my laptop?

In a SATA III system the drive can sustain up to 550 MB/s reads and 400 MB/s writes, so boot times and file transfers will be limited by the SATA interface rather than the NAND.

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