Talk:M.2

To-do list

 * What is the relation between "gum stick" SSDs used in, for example, MacBook Air &mdash; and the NGFF / M.2 SATA SSDs? Dsimic (talk) 14:26, 14 September 2013 (UTC)
 * "Gum stick" SSDs are proprietary (not standardized like M.2) — Preceding unsigned comment added by 192.55.55.39 (talk) 17:25, 14 July 2015 (UTC)
 * What kind of interface do they use, both bus-wise and at the logical level? &mdash; Dsimic (talk &#124; contribs) 20:51, 14 July 2015 (UTC)
 * Some images should be provided for an illustration of different M.2 sizes, and/or for a mSATA vs. M.2 comparison. -- Dsimic (talk) 01:45, 18 September 2013 (UTC)

Are M.2 and M.3 compatible?
te Could you please add to the article if one could use an M.2 in an M.3 slot and vice versa?--82.37.174.248 (talk) 00:38, 31 December 2018 (UTC)


 * M.2 is being updated with PCIE gen 4 inside of it. This maintains compatibilility


 * m.3 is an awkward terminology, it was a proposed terminology for  the update from PCIe gen 2 to PCIe gen 3, but  they haven't bothered.  This may be because  the  CPU may provide  PCIE gen 4  and the chipset a lesser PCIe, and also that these are backward compatible in both directions...   gen x device to gen y socket, for all x and y, for both PCIe and SATA. They both then talk at the slowest speed. See PCIe and SATA


 * So they really want to focus on the form factor and connector being M.2 (mechanically), and the PCIe/sata version is whatever is lesser  of what is connected together.


 * 27.96.199.11 (talk) 11:00, 2 September 2020 (UTC)


 * According to Anandtech, PCI-SIG was unhappy with Samsung calling it M.3 (since it is incompatible with M.2) and issued a warning to the industry and consumers.


 * I'm not sure this dispute between PCI-SIG and Samsung is worth a small note on the article, but I'd guess not (at the same time, I think it'd be ok to quickly mention it). Feelthhis (talk) 12:10, 6 December 2020 (UTC)

M.2 keying table
The existing table is somewhat helpful but not intuitive, and is basically a copy of a table in figure 3 of the spec. I propose a somewhat more complex table that is far more descriptive.

I'll wait for a week or so before changing the article. Vickas54 (talk) 04:28, 31 May 2021 (UTC)

I completely agree. Besides, the whole article is focused on storage, while M.2 is also used for other purposes. There is a good article, discussing all types of M.2 cards here: https://www.dell.com/support/kbdoc/en-us/000144170/how-to-distinguish-the-differences-between-m-2-cards 213.134.65.133 (talk) 10:38, 2 June 2021 (UTC)

Screws to secure M.2 cards
I came here looking for information on the screw needed to secure an M.2 card. They are hard to find. Are they metric M3 threaded screws? Is there a standard size? What does the standard require? 174.28.55.191 (talk) 15:30, 5 July 2021 (UTC)