M.2 Not recognized on my board

[MasterKano]

I'm having an issue with my board not recognizing my M.2 drive, I've been through the bios and set it as M.2, I'm up to date with my bios version (v.2001) I've used both the slot on the board and a hyper x4 wit a samsung 120gb 850 evo.

I've been into drive management and it does not appear as unallocated or allocated but it does appear in the bios, which confused me somewhat, I've only had this issue with my Rampage V X board and the newer bios update include enhanced compatibility for M.2 drives..... Any ideas?

[MisteryAngel]

Hmm thats kinda weird.
Maybe your m.2 ssd is not compatible with your board?

[MisteryAngel]

i found this article on the Asus ROG site which you should read carefully.

http://rog.asus.com/308552014/labels/guides/ssd-guide-pci-express-m-2-msata-and-sata-express-the-differences-explained/

Also: http://rog.asus.com/313352014/labels/guides/buying-an-m-2-ssd-how-to-tell-which-is-which/

Maybe @wendell could give some more insight information on this.

Briefly known as NGFF (next generation
form factor after mSATA), M.2 is the current connector standard for
mobile SSDs, although it has also been adopted by motherboards as well. M.2 connector can plug in both PCI-Express-based and SATA-based SSDs, but is generally PCI-Express-based only. This is important because, as we explained above, SATA and PCI-Express protocols are not inter-compatible. The
only way to confirm compatibility between your motherboard M.2 slot and
your M.2 SSD is to read the respective product specifications first: if
they match PCI-Express-to-PCI-Express or SATA-to-SATA, you're good to
go!

With the launch of 9-series motherboards, the ROG website and forums
will also keep a list of M.2 connector protocols available on ASUS, ROG
and TUF motherboards.