PCI-SIG warns that m2 and Samsung’s ngsff for SSDs are not compatible




PCI-SIG reminds consumers and manufacturers that the use of the PCi-e m2 connector and form factor for SSDs in combination with an incompatible standard can lead to damage. The organization also refers to ngsff annex nf1.

According to the PCI-SIG, the organization that oversees the PCI standard, ‘a third party’ has developed a form factor called ngsff or nf1 that does not match the m2 specification. That third party, which is not mentioned by the PCI-SIG, is Samsung. The Korean technology giant introduced the ngsff format last summer under the name nf1 as the intended successor to the m2 form factor. Samsung then let it be hoped that the Jedec organization would explain the format to standard.

However, the PCI-SIG warns that nf1 uses so-called no-connect pins for their own functionality, while those pins were reserved for future m2 specifications. “The use of the pins is in conflict with the last m2 specification,” according to the PCI-SIG, who warns that such damage can occur. The last m2 generation is version 1.2, the specification of which has yet to be finalized this year.

The organization advises manufacturers to prevent hardware that m2 clients can be connected to ngsff connections and vice versa, by adjusting the mechanical key of modules. According to AnandTech , the warning is somewhat exaggerated, partly because Samsung is focusing on data centers with its form factor and the chance is small that storage media accidentally end up in the wrong socket, because ngsff should be used especially with trays that do not fit m2-ssd’s. The site also writes that Samsung ngsff annex nf1 originally called ‘m3’, but the PCI-SIG did not agree with this. The site also writes that Jedec standardization of the job seems.

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