Kingston

Kingston 120GB A400 SATA 3 2.5" Internal SSD SA400S37/120G - HDD Replacement for Increase Performance , Black

Name: Kingston 120GB A400 SATA 3 2.5" Internal SSD SA400S37/120G - HDD Replacement for Increase Performance, Black
Brand: Kingston
SKU: B01N6JQS8C

Status: Kingston 120GB A400 SATA 3 2.5" Internal SSD… (120GB hard drive): Unavailable on Amazon as of 2026-11-07 17:13 UTC. Lowest-priced in-stock match (same 120GB hard drive): Bestoss 120GB Internal SSD - 2.5" SATA III 6Gb/s…, $435.99 on Amazon as of 2026-11-07 11:15 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $435.99 🛒 Search eBay for this model

Bottom line: The Kingston 120GB A400 SATA 3 2.5" Internal SSD SA400S37/120G: Sequential reads up to 500MB/s, writes up to 450MB/s per Kingston; main trade-off: 120GB fills fast once Windows and a few games are installed.

Unavailable on Amazon as of 2026-11-07 17:13 UTC

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Currently unavailable on Amazon. Not the same product — an in-stock alternative with matching specs:

Same 120GB hard drive: Bestoss 120GB Internal SSD - 2.5" SATA III 6Gb/s… — $435.99 on Amazon as of 2026-11-07 11:15 UTC (price may vary).

View Current Price — $435.99

Original listing (currently unavailable) → Compare to similar ssds & storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-11-07

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Sequential reads up to 500MB/s, writes up to 450MB/s per Kingston
✓ No moving parts, so no head crashes or spin-up failures
✓ Standard 2.5-inch SATA 3 fits most laptop bays and desktop cages
✓ Kingston rates it roughly 10x faster than a mechanical hard drive

Cons

✗ 120GB fills fast once Windows and a few games are installed
✗ SATA 3 caps throughput far below NVMe drives
✗ Write speed (450MB/s) trails its read speed
✗ 2.5-inch bay required; no M.2 slot option at this model number

Manufacturer description

Fast start up, loading and file transfers More reliable and durable than a hard drive. Dramatically improves the responsiveness of your existing system Multiple capacities with space for applications or a hard drive replacement

SpecPicks Verdict

SpecPicks scored Kingston 120GB A400 SATA 3 2.5" Internal SSD SA400S37/120G using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Kingston's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is the Kingston A400 compared to my old hard drive?

Kingston rates the A400 at up to 500MB/s read and 450MB/s write, and describes it as about 10x faster than a traditional mechanical hard drive for boot, load, and file-transfer times.

Is 120GB enough space for a boot drive?

120GB comfortably holds Windows plus everyday applications, which is the role this capacity targets. If you store large game libraries or video files, plan to keep a secondary drive or step up to a larger capacity in the A400 line.

Will this SSD fit my laptop?

It is a standard 2.5-inch SATA 3 drive (model SA400S37/120G), so it fits any laptop or desktop with a 2.5-inch SATA bay. Check your machine's drive bay height and interface before ordering.

Is the A400 more reliable than a hard drive?

Kingston builds the A400 on flash memory with no moving parts, which the company cites as making it more durable and less likely to fail than a mechanical drive with spinning platters and moving heads.

What warranty does the Kingston A400 come with?

Warranty terms are not listed in this product's specifications. Check the current product listing or Kingston's support site for the warranty period that applies to your region.

Key Features

Fast start up, loading and file transfers
More reliable and durable than a hard drive. Dramatically improves the responsiveness of your existing system
Multiple capacities with space for applications or a hard drive replacement

Full Specifications

Size	120 GB
Brand	Kingston
Color	Black
Model	SA400S37/120G
Warranty	Limited 3 Year
UnitCount	1
ReleaseDate	2017-01-03T00:00:01Z
Manufacturer	Kingston Technology
IsAdultProduct	false
ItemPartNumber	SA400S37/120G

Hardware benchmark data

Ready to buy?

Amazon shows no buyable offer for Kingston 120GB A400 SATA 3 2.5" Internal SSD… at the last check. The closest in-stock match with the same 120GB hard drive is Bestoss 120GB Internal SSD - 2.5" SATA III 6Gb/s…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $435.99