KIOXIA 128GB PCIe NVMe M.2 2230 SSD, Gen 3 x 4, 09946M, KBG40ZNS128G, OEM Package

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But first, the shape issue. Any M.2 drive you are looking at will be labeled with a four- or five-digit number as part of its specifications or model name. It's a measurement, in millimeters: The first two numbers define the drive's width, the second two the length.

The first attempt was a new form factor called mini-SATA, or mSATA. The boiled-down essence of an SSD with the shell removed, an mSATA drive is a bare, rectangular circuit board. (Most mSATA drives relevant to upgraders measure about 1 by 2 inches.) mSATA drives fit into a special slot in a laptop's logic board or on a PC motherboard. As the name suggests, the slot is a conduit to the Serial ATA bus in the system. The interface on the drive end is an edge connector on the PCB, as opposed to the usual SATA cabling. The mSATA drive also draws all the power it needs through the slot. (Credit: HP) M2P4S M.2 (NGFF) PCIe base SSD to PCIe ×4 Adapter". HW Tools. 14 February 2014 . Retrieved 22 June 2014. M.2 drive length isn't always an indicator of drive capacity, but therearelimits to NAND-chip density and how many memory modules engineers can stuff onto a PCB of a given size. As a result, most of the M.2 drives we've seen to date have topped out at 2TB, though you can find a few 4TB and 8TB models at lofty prices. The typical capacity waypoints are as follows: The key thing to remember about M.2 is that it is a form factor, a shape. The bus—the data pathway over which the data travels to and from an M.2 drive—is distinct from M.2 itself and can vary. And it can make all the difference. (Credit: Molly Flores)

Hensel, Martin; Graefen, Rainer (27 July 2018). "Was sind NF1, M.3 und NGSFF?". StorageInsider (in German). Vogel Communications Group. Archived from the original on 10 July 2022 . Retrieved 10 July 2022.

The Crucial T500 is for users willing to pay a little extra to get the best PCI Express 4.0 SSD performance. At a time when many low-priced DRAM-less SSDs are hitting the market, the T500 has a full DRAM cache (as well as a top-shelf Phison controller and 232-layer TLC NAND flash), which could give it an advantage in sustained large-file transfers, as well as in use with the PS5. Some people mount the M.2 SSD directly, but it may rattle due to the thinness without the enclosure. Users can add a shim to stop the rattle or put the new SSD into the old enclosure with (or without) adding the thermal paste. The ADATA XPG Spectrix S40 is an unapologetically bright RGB-lit PCIe 3.0 NVMe M.2 SSD that blings up your PC. Its 4K read and write speeds should keep most gamers happy, too. The ADATA XPG Spectrix S40G carries some respectable wins out of its duel with other competing drives we've tested, and it looked great doing it.Smaller-capacity 32GB and 64GB M.2 SSDs are also available for use in embedded applications or for SSD caching, but these are of marginal interest to upgraders or PC builders. Pricing on these drives ranges anywhere from 10 to 75 cents per gigabyte, and the biggest factor affecting price is the bus type of the drive.