Can I use an M2 SATA in an NVMe slot

Can I use an M2 SATA in an NVMe slot

A slot that can do SATA will have the M key and/or B key.

A slot that cannot do SATA will not have either the M or B key, but others instead, making it physically impossible to insert a SATA-only card.

A card with multiple keys can only use the lowest common set of features. With B+M, that’s PCIe x2, SATA and SMBus.

Because an M.2 NVMe SSD typically wants PCIe x4, there’s only one possibility: M key.

It might be noteworthy that slots with multiple keys are very rare, if they exist at all.

If a card physically fits the slot, it will work. That’s the entire idea behind the key notches.

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[bondjovi]

My Asus eee PC is soo old. It probably doesn't support the card in the bios.

[jbringuela]

I have nvme but has M+B keys. How's that?