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

Transcend

Transcend TS240GMTS420S 240GB M.2 SATA internal SSD

SKU CH-STX2-FVM5A MPN TS240GMTS420S

M.2 2242 SATA internal SSD with 240 GB capacity, up to 560 MB/s read and 500 MB/s write speeds

  • Device TypeInternal Solid State Drive (SSD)
  • Form FactorM.2 2280
  • Capacity120GB
  • InterfaceSATA III
  • ProtocolSATA
  • ConnectorSATA
  • M.2 2242 form factor fits ultra-compact devices
  • SATA III interface delivers up to 560 MB/s sequential read
  • 3D NAND with SLC caching enables 500 MB/s sequential write
  • LDPC coding and RAID engine protect data integrity
  • DevSleep mode extends battery life in notebooks

Transcend 240GB M.2 SATA SSD

This 240GB internal solid-state drive uses the M.2 2280 form factor and a SATA III 6Gb/s interface. It is built with 3D NAND flash and SLC caching technology to serve compact laptops and desktops needing a straightforward storage upgrade.

SATA III interface limits

The SATA III connection caps maximum sequential throughput at 6Gb/s, so real-world speeds cannot exceed this bus limit regardless of the drive's internal capability. Random 4KB performance reaches up to 65,000 read IOPS and 85,000 write IOPS within that constraint.

560 MB/s maximum sequential read

The drive's peak sequential read speed is rated at 560 MB/s, with sequential write up to 500 MB/s. This single figure determines whether the drive meets the throughput requirement for a given SATA-based system.

Highlights

  • M.2 2242 form factor fits ultra-compact devices
  • SATA III interface delivers up to 560 MB/s sequential read
  • 3D NAND with SLC caching enables 500 MB/s sequential write
  • LDPC coding and RAID engine protect data integrity
  • DevSleep mode extends battery life in notebooks

Specifications

BrandTranscend
ModelTS120GMTS420S
Part NumberTS120GMTS420S
Device TypeInternal Solid State Drive (SSD)
Form FactorM.2 2280
Capacity120GB
InterfaceSATA III
ProtocolSATA
ConnectorSATA
Cache120 unknown_modifier
Max Sequential Read420 megabits_per_second
Max Sequential Write500 MB per second
Sustained Random 4KB Read420 megabits_per_second
4KB Random Write420 megabits_per_second
Features560 megabytes_per_second
Height10.000
Width13.000
Depth2.2 in x 0.39 in x 8.0 in
Weight0.02
Package Content0

Questions about this item

Should I choose the 120GB or 240GB version of the Transcend MTS420S?

The 240GB model provides twice the storage of the 120GB version while keeping the same M.2 2280 form factor and SATA III interface.

What does the 560 MB/s sequential read figure mean when the drive is installed in my laptop?

It represents the peak throughput the controller can deliver over the SATA III link; real-world speeds will be lower and depend on the system workload and file sizes.

The drive uses a SATA III interface — what does that limit in practice?

The SATA III 6 Gb/s connection caps maximum sequential transfer at roughly 560 MB/s, so the drive cannot exceed that ceiling even if the flash memory is faster.

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