KingSpec

KingSpec 512GB M.2 2242 SATA III SSD

Name: KingSpec 512GB M.2 2242 SATA III SSD, Not for NVMe Slots | SATA3 6Gb/s, B+M Key, Up to 550MB/s, Internal Solid State Drives for Laptop / Desktop
Brand: KingSpec
SKU: B07CJ4BSK8

Status: KingSpec 512GB M.2 2242 SATA III SSD (512GB NVMe SSD M.2 2242): Unavailable on Amazon as of 2026-10-07 04:27 UTC. Closest in-stock match (same 512GB NVMe M.2 2242): Kingshark M.2 2242 SSD 512GB Ngff Internal Solid…, $99.00 on Amazon as of 2026-10-07 04:24 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $99.00 🛒 Search eBay for this model

Bottom line: The KingSpec 512GB M.2 2242 SATA III SSD: Up to 560MB/s read and 540MB/s write, about 5X mechanical hard drive throughput; main trade-off: SATA III only: undetected on NVMe-only motherboards, no exceptions.

Unavailable on Amazon as of 2026-10-07 04:27 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 512GB NVMe M.2 2242: Kingshark M.2 2242 SSD 512GB Ngff Internal Solid… — $99.00 on Amazon as of 2026-10-07 04:24 UTC (price may vary).

View Current Price — $99.00

Same 512GB NVMe M.2 2242: SAMSUNG 512GB M.2 2242 42mm PM991 NVMe PCIe Gen… — $144.80 on Amazon as of 2026-10-07 04:13 UTC (price may vary).

View Current Price — $144.80

Same 512GB NVMe M.2 2242: KingSpec 512GB M.2 2242 NVMe SSD - Up to 3500… — $110.97 on Amazon as of 2026-10-07 04:14 UTC (price may vary).

View Current Price — $110.97

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

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

✓ Up to 560MB/s read and 540MB/s write, about 5X mechanical hard drive throughput
✓ 2242 form factor fits ultrabooks and mini PCs too short for 2280 drives
✓ 3-year warranty with TRIM, wear-leveling, and S.M.A.R.T. health reporting
✓ B+M key works with Lenovo, HP, Dell, Asus, Sony, and Acer M.2 SATA slots

Cons

✗ SATA III only: undetected on NVMe-only motherboards, no exceptions
✗ Not compatible with any Mac system
✗ 550MB/s SATA ceiling is far below NVMe drives in the same M.2 slot
✗ Requires checking your manual or CrystalDiskInfo before buying to confirm M.2 SATA support

Manufacturer description

The KingSpec 512GB M.2 2242 SATA III SSD is a drop-in storage upgrade for ultrabooks, mini PCs, and compact laptops that use the shorter 42mm M.2 slot. Read this first: it is a SATA drive, not NVMe. It uses the B+M key, SATA III 6Gb/s interface and will not be detected on NVMe-only motherboards, so check your manual or run CrystalDiskInfo before you order. Once installed, you get up to 560MB/s read and 540MB/s write, which KingSpec rates at roughly 5X the throughput of a mechanical hard drive. In practice that means shorter boot times and faster launches for browsers, Office documents, and…

SpecPicks Verdict

SpecPicks scored KingSpec 512GB M.2 2242 SATA III SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. KingSpec'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

Will this SSD work in my NVMe M.2 slot?

No. This is an M.2 SATA III drive with a B+M key and it will not be recognized on NVMe-only motherboards. Your slot must specifically support M.2 SATA.

How do I check if my laptop is compatible before buying?

Look for M.2 SATA support in your laptop manual, or run CrystalDiskInfo on the existing drive. KingSpec lists Lenovo, HP, Dell, Asus, Sony, and Acer as commonly compatible brands.

Can I use this in a MacBook or Mac mini?

No. KingSpec states this drive is not compatible with any Mac. It is intended for Windows laptops and desktops with M.2 SATA slots.

How fast is it compared to the hard drive I am replacing?

KingSpec rates it at up to 560MB/s read and 540MB/s write over the SATA III 6Gb/s interface, roughly 5X faster than a mechanical hard drive for boot and app-load times.

What warranty and reliability features does it include?

It ships with a 3-year warranty and supports TRIM, wear-leveling, and S.M.A.R.T., which spread write wear and let you monitor drive health. Check the listing for current warranty terms.

Key Features

NOT for NVMe Slots: This is M.2 SATA SSD that works only on M.2 slots supporting SATA III. Will not be recognized on NVMe-only motherboards
Before Buying - Check Compatibility: Look for M.2 SATA support in your manual or run CrystalDiskInfo. Common compatible brands: Lenovo, HP, Dell, Asus, Sony, Acer. Not compatible with any Mac
Breathe New Life into Your Old PC: With up to 560MB/s read and 540MB/s write speeds, 5X faster than HDD, this M2 SATA SSD slashes boot time and accelerates everyday tasks like opening browsers, Office and games
Built to Last with 3-year Warranty: Advanced reliability features including TRIM, Wear-Leveling, and S.M.A.R.T protect your data and extend drive life. Rated for long-term daily use in laptops and desktops
Various Capacities to Choose From: 512GB, 1TB, 2TB available. Upgrade your PC without worrying about running out of space. Save more games, photos, videos and files
Compact 2242 Form Factor: M.2 2242 size with B+M Key design fits in space-constrained devices including ultrabooks, mini PCs, and compact laptops requiring shorter M.2 drives

Full Specifications

Brand	KingSpec
Color	22x42mm
Model Name	KingSpec NT-XXX
Read Speed	560 megabytes_per_second
Unit Count	1 Count
Form Factor	M2
Media Speed	540 megabytes_per_second
Model Number	NT-512 2242
Compatibility	PC, Mac
Built-In Media	1 x Solid State Drive
Hard-Drive Size	512 GB
Mfr Part Number	NT-512 2242
Number of Items	1
Special Feature	Backward Compatible, Local Command Tailoring, Local Command to Queue, Retroactive Compatibility, Retroactive Compatible, SMART & TRIM
Hardware Platform	PC
Installation Type	Internal Hard Drive
Compatible Devices	Desktop, Laptop
Data Transfer Rate	6 gigabits_per_second
Enclosure Material	Nand
NOT for NVMe Slots	This is M.2 SATA SSD that works only on M.2 slots supporting SATA III. Will not be recognized on NVMe-only motherboards
Full listing title	KingSpec 512GB M.2 2242 SATA III SSD, Not for NVMe Slots \| SATA3 6Gb/s, B+M Key, Up to 550MB/s, Internal Solid State Drives for Laptop / Desktop Upgrades

Ready to buy?

Amazon shows no buyable offer for KingSpec 512GB M.2 2242 SATA III SSD at the last check. The closest in-stock match with the same 512GB NVMe M.2 2242 is Kingshark M.2 2242 SSD 512GB Ngff Internal Solid…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $99.00