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Small green circuit board M.2 2242 SSD with black controller and gold edge connector

Dogfish Technology

Dogfish Technology 2242-240GB M.2 2242 internal SSD

SKU CH-WMBS-3G74G

M.2 2242 SATA internal SSD with 240 GB capacity, up to 550 MB/s read and 400 MB/s write, 3D NAND and SM2256KAB controller

  • Total capacity240 GB
  • Sequential read speedUP TO 450 MB/s
  • Sequential write speedUP TO 400 MB/s
  • Interface typeSATA3
  • Form factorM.2 2242
  • Product typeInternal Solid State Drive (SSD)

Capacity 240GB

  • M.2 2242 form factor fits slim laptops and compact desktops
  • SATA III interface delivers up to 550 MB/s read and 400 MB/s write
  • 3D NAND TLC memory provides 240 GB capacity with enhanced reliability
  • Built-in ECC and bad-block management protect data integrity
  • DevSleep ultra-low power state extends battery life in portable devices

Compact M.2 2242 drive for space-constrained systems

This 2242 form factor SSD fits laptops, ultrabooks and small-form-factor desktops that only accept a 42mm module. The SATA 6 Gb/s interface works with any host that supports the AHCI protocol. It delivers 240GB of 3D NAND storage for everyday computing.

Built-in ECC, bad-block management

The SM2256KAB controller applies error correction and wear-leveling algorithms to extend cell life. DevSleep enables an ultra-low power state that reduces battery drain during idle periods. SMART, TRIM and NCQ commands are also supported for health monitoring and sustained write performance.

Sequential speeds limited by the SATA 6 Gb/s ceiling

Maximum sequential read reaches 450 MB/s and write reaches 400 MB/s, well below the interface theoretical limit. Random I/O and sustained workloads will fall further as the drive fills. Operating temperature range is 0 °C to 75 °C, so thermal throttling may occur in poorly ventilated chassis.

How it compares

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

Price $43.99
Cheaper than about 92% of the 1,994 comparable items (median $180.49).
Total capacity 240 GB
Lower than about 90% of the 1,368 comparable items (median 1 TB).
Sequential read speed UP TO 450 MB/s
Lower than about 91% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $183.29 per TB
Pricier than about 56% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameTHREE COLOUR DOGFISH
Product line2242-240 GB
Model name2242-240 GB
Total capacity240 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUP TO 450 MB/s
Sequential write speedUP TO 400 MB/s
Storage
NAND flash type3D NAND
Controller chipSM2256KAB
Ports & slots
Interface typeSATA3
Size & build
Form factorM.2 2242
Overall height42MM
Overall width22 mm
Product depth3.2MM
Product weight7.0G
Environment & compliance
Operating temperature range0 °C to 75 °C
Storage temperature range-40 °C to 85 °C
Operating humidity range0% ~ 95%
More details
Mean time between failures10,000,000 h

Other versions of this model

5 more in the same range

Questions about this item

Will the 3D NAND TLC memory or SM2256KAB controller need replacement within the 10,000,000 hour MTBF rating?

The drive has no moving parts and uses 3D NAND with built-in ECC and bad-block management; under normal consumer workloads the SM2256KAB controller and memory are designed to last the full MTBF period without scheduled replacement.

What thermal limit appears first during sustained transfers on the SATA III 6 Gb/s interface?

The operating temperature ceiling is 75 °C; if the drive reaches that point the controller will throttle speeds to protect the 3D NAND and SM2256KAB components.

How much heat and noise does the 7.0 g M.2 2242 module produce when running all day?

With no moving parts the drive generates minimal heat and zero acoustic noise; power draw drops further in DevSleep ultra-low-power state during idle periods.

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