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Rectangular 2.5 inch internal SSD with black metal casing and label showing Kingston A400 120GB

Kingston Technology Corp.

Kingston Technology Corp. SA400S37/120G A400 120GB 2.5" SATA internal SSD

SKU CH-T4QK-Z4K22 MPN SA400S37/120G

A 120 GB 2.5" SATA internal SSD with 3D NAND delivering up to 500 MBps read and 320 MBps write for faster start-up and file transfers

  • Total capacity120 GB
  • Sequential read speedUp to 500 MB/s
  • Sequential write speedUp to 320 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Model 120GB

  • Faster boot and file transfers with 500 MBps read speeds
  • 320 MBps write speeds accelerate everyday workloads
  • Shock and vibration resistance protects data in notebooks
  • Low 0.195 W idle draw extends laptop battery life
  • 1,000,000-hour MTBF and 40 TBW ensure long-term reliability

A400 120GB SATA III internal SSD

The Kingston A400 SA400S37/120G is a 2.5 inch internal solid state drive with a 120GB capacity. It uses 3D NAND flash memory and a SATA III interface to deliver sequential reads up to 500 MBps and writes up to 320 MBps. The 7mm height allows installation in slimmer notebooks as well as standard desktop bays.

Suits older SATA laptops

This drive targets users replacing a mechanical hard drive in a SATA based laptop or desktop to gain faster start-up, loading and file transfers. Its shock and vibration resistance supports mobile use. Users who need more than 120GB of space or who require higher throughput than SATA III provides should consider a different drive.

Check your system has a 2.5 inch SATA bay

Verify the host device accepts a 2.5 inch SATA III drive and that the drive bay or caddy accommodates a 7mm height. Confirm the operating temperature range of 0°C to 70°C matches the intended environment. Ensure the power supply can deliver the peak write draw of 1.535W if the system runs sustained heavy writes.

How it compares

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

Price $14.99
Cheaper than about 98% of the 1,994 comparable items (median $180.49).
Total capacity 120 GB
Lower than about 95% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 500 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $124.92 per TB
Cheaper than about 70% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameKingston
Product lineA400
Model nameSA400S37/120G
Part numberSA400S37/120G
Total capacity120 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 500 MB/s
Sequential write speedUp to 320 MB/s
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA III
Power
Idle power draw0.195 W
Active power draw0.279 W Avg
0.642 W (MAX) Read
1.535 W (MAX) Write
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.9 mm
Product depth100 mm
Product weight41g
Shipping weight0.06 kg
Package size182 × 127 × 3 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-40 °C to 85 °C
Vibration toleranceOperating: 2.17G Peak (7–800 Hz)
Non-operating: 20G Peak (10–2000 Hz)
More details
Mean time between failures1,000,000 h

Other versions of this model

4 more in the same range

Questions about this item

Does my desktop need a 2.5-inch drive bay and a SATA data cable to install this 120GB A400 SSD?

Yes, the 2.5-inch form factor requires a compatible bay or bracket, and the SATA III interface needs a standard SATA data cable plus a SATA power connector from the power supply.

Will the SATA III interface on this 120GB A400 limit performance if my older laptop only has a SATA II port?

The drive will operate at the SATA II port's lower bandwidth, so maximum sequential read speeds will be below the rated 500 MBps, but the SSD still provides much faster access times than a mechanical drive.

How can I verify the 120GB A400 is delivering its rated performance after installation?

Run a benchmark tool such as CrystalDiskMark and confirm sequential read results approach 500 MBps and write results approach 320 MBps on a SATA III connection.

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