SSD will show on boot menu but not on M.2 slot in BIOS. Is this normal?

Hey,

Here is a screenshot of my BIOS: http://ift.tt/2BxDmXM

Yesterday I was having trouble getting my SSD drive to work but somehow it started working without issues for no apparent reason. Only thing that I find strange is that it does not show up on the BIOS slot list, despite the fact that it does show on the boot menu on the right and I can load the OS installed in it just fine.

I have the latest BIOS version on ASUS site.

Submitted December 01, 2017 at 02:33AM by lfcmc http://ift.tt/2kcwoDw